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Finding the Fourth Proportional to 8,600.32, 12,880.98 and 7,045.12

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Solution

The fourth proportional to 8,600.32, 12,880.98 and 7,045.12 is: 10,551.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.32 : 12,880.98 = 7,045.12 : x
  2. Step 2: Convert to fraction form
    8,600.32/12,880.98 = 7,045.12/x
  3. Step 3: Cross multiply
    8,600.32x = 12,880.98 × 7,045.12
  4. Step 4: Simplify right side
    8,600.32x = 90,748,049.82
  5. Step 5: Solve for x
    x = 90,748,049.82/8,600.32
  6. Step 6: Final answer
    x = 10,551.71

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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.