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Finding the Fourth Proportional to 8,874.60, 12,248.08 and 7,379.92

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Solution

The fourth proportional to 8,874.60, 12,248.08 and 7,379.92 is: 10,185.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,874.60 : 12,248.08 = 7,379.92 : x
  2. Step 2: Convert to fraction form
    8,874.60/12,248.08 = 7,379.92/x
  3. Step 3: Cross multiply
    8,874.60x = 12,248.08 × 7,379.92
  4. Step 4: Simplify right side
    8,874.60x = 90,389,850.55
  5. Step 5: Solve for x
    x = 90,389,850.55/8,874.60
  6. Step 6: Final answer
    x = 10,185.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.