Use this free Proportion Calculator to solve missing values in proportions quickly and easily. Enter three known values, leave one box empty, and calculate the unknown number in seconds.
Enter 3 values and leave 1 box empty to solve the missing number.
How This Proportion Calculator Works
A proportion shows that two ratios are equal. This calculator helps you solve for the missing value when three numbers are known. It is useful for math homework, recipes, scaling, maps, measurements, and real-life comparisons.
Why Use a Proportion Calculator
- Quickly solve missing values in proportions
- Save time compared to solving by hand
- Reduce calculation mistakes
- Helpful for students and homework
- Useful for recipes, measurements, and scaling
- Great for business, budgeting, and comparisons
- Easy to use on desktop and mobile
Proportion Calculator FAQs
What is a proportion?
A proportion is an equation that shows two ratios are equal, such as 2:3 = 4:6.
How do you solve a proportion?
You solve a proportion by cross-multiplying and dividing to find the missing value.
Can this calculator find a missing number?
Yes. Enter three values, leave one box empty, and the calculator will solve the missing number.
Where are proportions used in real life?
Proportions are used in cooking, maps, construction, finance, shopping, and many school math problems.
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