Simplify ratios, solve proportions (find missing value), and scale ratios up or down.
Enter 3 values, leave one blank (?) to find it. A:B = C:D
A ratio compares two or more quantities. For example, a ratio of 3:4 means for every 3 of one thing, there are 4 of another.
Ratios are simplified by dividing all values by their GCF. 6:8 simplifies to 3:4.
Enter the ratio values and click Calculate to simplify, scale, or solve for a missing value.