In a proportion the first, third and fourth terms are 3 ,21,35, . Find the second term
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Solution :
In a proportion, the first, third and fourth terms are 3, 21 and 35 respectively.
We have to find the second term.
A proportion can be depicted as :
a : b :: c : d
a and d are antecedents
b and c are consequents.
Product of antecedents is equal to the product of consequents.
ad = bc
3 : b :: 21 : 35
>> 21b = 105
>> b = 5
Answer : The second term of the ratio is 5.
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