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Finding the Fourth Proportional to 8,600.73, 12,880.32 and 4,891.72

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Solution

The fourth proportional to 8,600.73, 12,880.32 and 4,891.72 is: 7,325.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.73 : 12,880.32 = 4,891.72 : x
  2. Step 2: Convert to fraction form
    8,600.73/12,880.32 = 4,891.72/x
  3. Step 3: Cross multiply
    8,600.73x = 12,880.32 × 4,891.72
  4. Step 4: Simplify right side
    8,600.73x = 63,006,856.33
  5. Step 5: Solve for x
    x = 63,006,856.33/8,600.73
  6. Step 6: Final answer
    x = 7,325.76

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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.