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Finding the Fourth Proportional to 8,728.52, 13,092.80 and 2,572.52

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Solution

The fourth proportional to 8,728.52, 13,092.80 and 2,572.52 is: 3,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.52 : 13,092.80 = 2,572.52 : x
  2. Step 2: Convert to fraction form
    8,728.52/13,092.80 = 2,572.52/x
  3. Step 3: Cross multiply
    8,728.52x = 13,092.80 × 2,572.52
  4. Step 4: Simplify right side
    8,728.52x = 33,681,489.86
  5. Step 5: Solve for x
    x = 33,681,489.86/8,728.52
  6. Step 6: Final answer
    x = 3,858.79

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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.