Understanding Proportions

A proportion is a statement that two ratios are equal. It's a fundamental concept in mathematics used to compare quantities and solve problems involving scaling and ratios. In its simplest form, a proportion can be written as a/b = c/d, where 'a' is to 'b' as 'c' is to 'd'. Proportions are incredibly useful in everyday life, from adjusting recipes and calculating distances on maps to understanding financial ratios and scaling architectural designs. This calculator helps you find the missing value in a proportion when you know three out of the four values. Just input the known values, leaving the unknown blank, and let the calculator solve it for you instantly.

• Example: If 2 apples cost $1, how much would 6 apples cost? (2/1 = 6/x, solve for x)
• Use Cases: Cooking, scaling recipes, calculating ratios, unit conversions, similar triangles, percentage problems.