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Finding the Fourth Proportional to 8,916.31, 13,375.81 and 3,654.14

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Solution

The fourth proportional to 8,916.31, 13,375.81 and 3,654.14 is: 5,481.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.31 : 13,375.81 = 3,654.14 : x
  2. Step 2: Convert to fraction form
    8,916.31/13,375.81 = 3,654.14/x
  3. Step 3: Cross multiply
    8,916.31x = 13,375.81 × 3,654.14
  4. Step 4: Simplify right side
    8,916.31x = 48,877,082.35
  5. Step 5: Solve for x
    x = 48,877,082.35/8,916.31
  6. Step 6: Final answer
    x = 5,481.76

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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.