Rule of three - Proportion

Mango Labs.

About this app

Proportion is the simplest and fastest way to solve proportion problems. Enter three values and get the answer instantly — no buttons, no steps, no waiting. Perfect for students, teachers, engineers, and anyone who works with proportions daily.

CORE FEATURES:
Instant Results — See the answer in real time as you type, with no need to press a button
Direct & Inverse Proportions — Switch between direct and inverse proportion with a single tap
Copy to Clipboard — Tap the result to copy it instantly, ready to paste anywhere
Dark Interface — A clean, distraction-free dark theme designed for focus
Portrait Optimized — Purpose-built for quick, one-handed use

PERFECT FOR:
Students solving math and science problems
Teachers preparing exercises and checking answers
Engineers and professionals doing quick calculations
Anyone who needs fast, reliable proportion solving on the go

MULTI-LANGUAGE SUPPORT:
Available in 20+ languages including English, Spanish, French, German, Portuguese, Japanese, Korean, Chinese, Arabic, Hindi, Indonesian, Turkish, Vietnamese, Dutch, Polish, Thai, and more.

Terms of Use: https://www.mangolabs.com.br/apps/proportion/terms

Privacy Policy: https://www.mangolabs.com.br/apps/proportion/privacy

If you have a support query, please get in touch with us by email: [e-mail]

Download Proportion today and never struggle with proportions again. Fast, accurate, and beautifully designed.

What’s new

First version of the app.