Question

For four numbers a, b, c, d if a : b = c : d, then b : a = d : c. Which property of proportion is this?

• A. Invertendo
• B. Alternendo
• C. Dividendo
• D. Componendo

Answer 1

The correct option is A

Invertendo

For four numbers a, b, c, d if a: b = c : d, then b: a = d: c; that is, if two ratios are equal, then their inverse ratios are also equal. This is the property of Invertendo.