Proportion Calculator

Enter an unknown variable (x) and 3 values in the input boxes below to find the proportion between two ratios using proportions calculator.


Is This Tool Helpful?


Proportion calculator is an online tool that solves two fractions for the variable x. It evaluates the equality between two fractions with cross multiplication.

What are proportions?

Proportion is a statement which tells us that two ratios are equal. The symbol of proportion is ‘::’ and ‘=’.

For example, two ratios are in proportion if they are equal to each other.


How to solve proportions?

Solving proportions is easier than you think. Let’s solve a proportion with an example.


If ratio of pizzas to burgers is 3/5 in a party, how many of burgers will be there if there are total of 15 burgers.


Step 1: Construct a proportion using the given values and x.

3/5 = x/15

Step 2: Apply cross multiplication to the above equation.

5x = 3 × 15

x = 45/5

x = 9

So, there will be 9 pizzas with 15 burgers.

Use proportion solver above to solve fractions.