Respuesta :
The ratio that forms a proportion are 12 / 7 and 60 / 35.
A proportion is two equal ratios.
A ratio compares two quantities.
One of the way to check if two ratios are equivalent is to cross multiply and compare the cross products.
Therefore,
For the ratio a / b and c / d. If ad = cb , then a / b and c / d are proportional
and this means a / b = c / d
Therefore,
12 / 7 = 60 / 35
12 × 35 = 60 × 7
420 = 420
Therefore, the ratio that forms a proportion are 12 / 7 and 60 / 35.
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