Question

The fourth proportional to 2, 3, 4 is 5236

Solution

The correct option is C 6Let x be the required fourth proportional. So, 2, 3, 4 and x are in proportion. Recall that the rule of proportion states that the product of extremes equals the product of means. ⇒2×x=3×4 ⇒2x=12  ⇒x=122=6   Thus, the fourth proportional to 2, 3, 4 is 6. In other words, 2, 3, 4 and 6 are in proportion.

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