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Finding the Fourth Proportional to 5,691.68, 8,540.23 and 2,572.64

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Solution

The fourth proportional to 5,691.68, 8,540.23 and 2,572.64 is: 3,860.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,691.68 : 8,540.23 = 2,572.64 : x
  2. Step 2: Convert to fraction form
    5,691.68/8,540.23 = 2,572.64/x
  3. Step 3: Cross multiply
    5,691.68x = 8,540.23 × 2,572.64
  4. Step 4: Simplify right side
    5,691.68x = 21,970,937.31
  5. Step 5: Solve for x
    x = 21,970,937.31/5,691.68
  6. Step 6: Final answer
    x = 3,860.18

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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.