Proportion calculator

The proportion calculator will help you solve proportion problems with ease and with the click of a button.



Guidelines to follow when using the calculator:

Each table has two boxes. The box on top is the numerator and the box at the bottom is the denominator. Therefore, each table represents a ratio

Enter a ratio with two values in either box. Then enter only one value in the other box

Hit the calculate button and the fourth value will be computed!

solved Example

The ratio of boys to girls is 2/5. How many boys are there in this classroom if there are 20 girls? This means that if there are 2 boys in this class, we have 5 girls.

Notice that number of boys is on top and number of girls is at the bottom

Therefore, pick a table and put 2 in the box on top and put 5 in the box at the bottom.

Next, since 20 represents number of girls and this number was at the bottom in the ratio of boys to girls ( 2/5 ), it will go in the box at the bottom in the other table

Hit calculate and you will see that there are 8 boys for 20 girls.

Still struggling with fractions? Get rid of your fears and frustrations once and for all!

Buy my ebook. It offers a thorough coverage of fractions!

Fractions ebook cover

Page copy protected against web site content infringement by Copyscape

New Math Lessons

  1. Compensation in Math

    Sep 25, 15 11:35 AM

    Learn what compensation is in math. See how to use compensation to do mental math

    Read More

  2. Cryptarithms

    Sep 24, 15 06:19 PM

    Learn what cryptarithms are and how to solve them

    Read More

Bookmark and Share