Two figures in, a clear answer out. The triangle proportionality theorem calculator uses ad, db and ec to produce ae, applying the standard relationship for this problem in the order the calculation actually needs it.
What Is the Triangle Proportionality Theorem Calculator?
The triangle proportionality theorem calculator works through ad, db and ec to give you ae.
It is aimed at the case where you know the method but not the arithmetic: schoolwork, a quick check on a worked example, or a figure that needs to be right first time.
How the Triangle Proportionality Theorem Works
Each step is applied in order and depends only on the values before it, which makes it possible to follow the calculation rather than take it on trust.
If you are working through the same problem by hand afterwards, compare the intermediate values. That is where a mistake usually shows itself.
Checking Your Own Working
Round sensibly as you go and keep the full precision in the calculator. Rounding too early is the most common way of getting a right method to give a wrong answer.
Where a result should be a whole number, such as a count, check it against the constraint that produced it. A fraction of a person is a sign that something upstream needs revisiting.
A Worked Example
Working through an example, with ad set to 10, db set to 5, ec set to 2, the calculator returns ae of 4. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out ae?
Enter ad, db and ec. The calculator then works through the relationship and reports ae.
What does the triangle proportionality theorem actually calculate?
It takes ad, db and ec and converts them into ae using the standard relationship for this problem. Each step is applied in turn, so every output is traceable back to the numbers you typed in.
How should I enter ad?
Use the value you actually have, in the unit shown next to the field. Enter every value in the same unit system. The calculator assumes the figures you supply are consistent, so it cannot correct a mistake that happens before the calculation starts.
Does anything you type get stored?
No. The whole calculation runs inside your browser, and nothing you enter is uploaded, logged or sent anywhere.
Do I have to fill in every field?
Only the fields a particular result depends on. If you leave one blank, the results that need it simply show a note instead of a number, and everything else still works.