Rule of Three (direct and inverse)

A is to B as C is to X — solve for X. Direct: more of one means more of the other. Inverse: more of one means less of the other.

X (directa)

10,0000

Si 3 → 6, entonces 5 → 10,0000

Cómo se calcula

Directa: X = (B × C) / A

Inversa: X = (A × B) / C

Cómo usarla

  1. Enter A and B. Known relation.
  2. Enter C. Value you want X for.
  3. Pick type. Direct or inverse.

Preguntas frecuentes

Direct or inverse?

Direct: more apples cost more money. Inverse: more workers means fewer days to finish.

Works for percentages?

Yes — a special case of direct rule.

Recipe scaling?

Classic use: scale a 4-person recipe to 6.

Calculadoras relacionadas