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Finding the Fourth Proportional to 8,418.76, 12,627.30 and 2,575.42

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Solution

The fourth proportional to 8,418.76, 12,627.30 and 2,575.42 is: 3,862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.76 : 12,627.30 = 2,575.42 : x
  2. Step 2: Convert to fraction form
    8,418.76/12,627.30 = 2,575.42/x
  3. Step 3: Cross multiply
    8,418.76x = 12,627.30 × 2,575.42
  4. Step 4: Simplify right side
    8,418.76x = 32,520,600.97
  5. Step 5: Solve for x
    x = 32,520,600.97/8,418.76
  6. Step 6: Final answer
    x = 3,862.87

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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.