Mathematics
Grade9
Easy
Question
‘If 
, then ad=bc in a proportion’. The property is
- Cross product property
- Reciprocal property
- Distributive property
- Inverse property
Hint:
For every proportion, the product of the extremes is always equal to the product of the means, i.e., a : b : : c : d if and only if ad = bc.
For example; in proportion 3 : 4 : : 9 : 12;
Product of extremes = 3 × 12 = 36 and product of means = 4 × 9 = 36
The correct answer is: Cross product property
‘If , then ad=bc in a proportion’. The property is cross product property.
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