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Finding the Fourth Proportional to 10,613.13, 15,919.71 and 3,687.63

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Solution

The fourth proportional to 10,613.13, 15,919.71 and 3,687.63 is: 5,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,613.13 : 15,919.71 = 3,687.63 : x
  2. Step 2: Convert to fraction form
    10,613.13/15,919.71 = 3,687.63/x
  3. Step 3: Cross multiply
    10,613.13x = 15,919.71 × 3,687.63
  4. Step 4: Simplify right side
    10,613.13x = 58,706,000.19
  5. Step 5: Solve for x
    x = 58,706,000.19/10,613.13
  6. Step 6: Final answer
    x = 5,531.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.