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Finding the Fourth Proportional to 8,620.16, 12,930.72 and 2,464

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Solution

The fourth proportional to 8,620.16, 12,930.72 and 2,464 is: 3,696.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.16 : 12,930.72 = 2,464 : x
  2. Step 2: Convert to fraction form
    8,620.16/12,930.72 = 2,464/x
  3. Step 3: Cross multiply
    8,620.16x = 12,930.72 × 2,464
  4. Step 4: Simplify right side
    8,620.16x = 31,861,294.08
  5. Step 5: Solve for x
    x = 31,861,294.08/8,620.16
  6. Step 6: Final answer
    x = 3,696.14

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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.