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Finding the Fourth Proportional to 8,531.88, 12,797.87 and 5,327.12

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Solution

The fourth proportional to 8,531.88, 12,797.87 and 5,327.12 is: 7,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.88 : 12,797.87 = 5,327.12 : x
  2. Step 2: Convert to fraction form
    8,531.88/12,797.87 = 5,327.12/x
  3. Step 3: Cross multiply
    8,531.88x = 12,797.87 × 5,327.12
  4. Step 4: Simplify right side
    8,531.88x = 68,175,698.61
  5. Step 5: Solve for x
    x = 68,175,698.61/8,531.88
  6. Step 6: Final answer
    x = 7,990.70

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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.