Rule of Three Calculator

Rule of Three Calculator

Introduction

The Rule of Three Calculator is a free and open-source online tool designed to help you solve proportional relationships quickly and easily. This tool is perfect for students, professionals, and anyone who needs to perform calculations involving ratios and proportions.

How to Use

  1. Enter Values

    • In the input fields labeled "A", "B", and "C", enter the known values of your proportion.
    • The calculator follows the format: A : B = C : X, where X is the unknown value you want to calculate.

  2. Calculate

    • After entering the values, click the "Calculate" button.
    • The tool will process your input and display the result.

  3. View Result

    • The calculated result (X) will appear in the "Result (X)" field below the input area.
    • The result is displayed with four decimal places for precision.

  4. Copy Result

    • To copy the calculated result, click the "Copy" button next to the result field.
    • This will copy the value to your clipboard for easy pasting elsewhere.

  5. Clear Fields

    • To start a new calculation, click the "Clear" button.
    • This will erase all input fields and the result, allowing you to start fresh.

Tips

  • Ensure all input values are numeric. The calculator cannot process text or symbols.
  • The first value (A) cannot be zero, as it would result in an undefined proportion.
  • For best results, use consistent units when entering your values.

Troubleshooting

  • If you receive an error message, check that all entered values are valid numbers.
  • If the calculation doesn't seem correct, double-check your input values and their order.

Use Cases

  • Converting units of measurement
  • Scaling recipes
  • Calculating percentages
  • Solving problems in physics, chemistry, and other sciences
  • Financial calculations involving ratios

We hope you find this Rule of Three Calculator useful for your mathematical needs!