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Finding the Fourth Proportional to 8,581.01, 12,755.78 and 8,328.76

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Solution

The fourth proportional to 8,581.01, 12,755.78 and 8,328.76 is: 12,380.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.01 : 12,755.78 = 8,328.76 : x
  2. Step 2: Convert to fraction form
    8,581.01/12,755.78 = 8,328.76/x
  3. Step 3: Cross multiply
    8,581.01x = 12,755.78 × 8,328.76
  4. Step 4: Simplify right side
    8,581.01x = 106,239,787.93
  5. Step 5: Solve for x
    x = 106,239,787.93/8,581.01
  6. Step 6: Final answer
    x = 12,380.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.