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Finding the Fourth Proportional to 8,387.52, 12,572.64 and 4,490.88

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Solution

The fourth proportional to 8,387.52, 12,572.64 and 4,490.88 is: 6,731.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.52 : 12,572.64 = 4,490.88 : x
  2. Step 2: Convert to fraction form
    8,387.52/12,572.64 = 4,490.88/x
  3. Step 3: Cross multiply
    8,387.52x = 12,572.64 × 4,490.88
  4. Step 4: Simplify right side
    8,387.52x = 56,462,217.52
  5. Step 5: Solve for x
    x = 56,462,217.52/8,387.52
  6. Step 6: Final answer
    x = 6,731.69

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