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Finding the Fourth Proportional to 8,600.72, 12,902.96 and 2,757.92

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Solution

The fourth proportional to 8,600.72, 12,902.96 and 2,757.92 is: 4,137.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.72 : 12,902.96 = 2,757.92 : x
  2. Step 2: Convert to fraction form
    8,600.72/12,902.96 = 2,757.92/x
  3. Step 3: Cross multiply
    8,600.72x = 12,902.96 × 2,757.92
  4. Step 4: Simplify right side
    8,600.72x = 35,585,331.44
  5. Step 5: Solve for x
    x = 35,585,331.44/8,600.72
  6. Step 6: Final answer
    x = 4,137.48

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1.5x scale

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.