Single Rule of Three Direct

What is Rule of Three Direct

The rule of three direct is a mathematical method used to solve proportion problems where two ratios are equal. If you know three values in a proportion (a : b = c : x), you can find the fourth value (x) using the formula x = (b × c) / a. This method is fundamental in mathematics and widely used in everyday calculations involving proportional relationships.

What is Online Rule of Three Calculator

An online rule of three calculator is a web-based tool that solves direct proportion problems without downloading software. It automatically calculates the unknown value in a proportion using the rule of three formula, with customizable precision for decimal places, making it perfect for students, professionals, and anyone working with proportional calculations.

How to Use Rule of Three Calculator

Enter the three known values (a, b, and c) in their respective fields, set your preferred number of decimal places for precision, and the tool will automatically calculate and display the fourth value (x) showing the complete proportion formula: a : b = c : x. The calculation updates in real-time as you modify the input values.