New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Find the fourth proportion of 3, 7 and

    15.
    A 21 Correct Answer Incorrect Answer
    B 15 Correct Answer Incorrect Answer
    C 35 Correct Answer Incorrect Answer
    D 49 Correct Answer Incorrect Answer

    Solution

    Let the fourth proportional be 'x'

    So, (3/7) = (15/x)

    So, x = 15 X (7/3) = 35

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