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Finding the Fourth Proportional to 8,600.91, 12,902.58 and 2,756.15

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Solution

The fourth proportional to 8,600.91, 12,902.58 and 2,756.15 is: 4,134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.91 : 12,902.58 = 2,756.15 : x
  2. Step 2: Convert to fraction form
    8,600.91/12,902.58 = 2,756.15/x
  3. Step 3: Cross multiply
    8,600.91x = 12,902.58 × 2,756.15
  4. Step 4: Simplify right side
    8,600.91x = 35,561,432.09
  5. Step 5: Solve for x
    x = 35,561,432.09/8,600.91
  6. Step 6: Final answer
    x = 4,134.62

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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.