Home / 8,517.20-12,761.40-4,125.20

Finding the Fourth Proportional to 8,517.20, 12,761.40 and 4,125.20

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Solution

The fourth proportional to 8,517.20, 12,761.40 and 4,125.20 is: 6,180.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.20 : 12,761.40 = 4,125.20 : x
  2. Step 2: Convert to fraction form
    8,517.20/12,761.40 = 4,125.20/x
  3. Step 3: Cross multiply
    8,517.20x = 12,761.40 × 4,125.20
  4. Step 4: Simplify right side
    8,517.20x = 52,643,327.28
  5. Step 5: Solve for x
    x = 52,643,327.28/8,517.20
  6. Step 6: Final answer
    x = 6,180.83

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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.