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Finding the Fourth Proportional to 8,881.57, 12,256.54 and 4,902.90

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Solution

The fourth proportional to 8,881.57, 12,256.54 and 4,902.90 is: 6,765.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.57 : 12,256.54 = 4,902.90 : x
  2. Step 2: Convert to fraction form
    8,881.57/12,256.54 = 4,902.90/x
  3. Step 3: Cross multiply
    8,881.57x = 12,256.54 × 4,902.90
  4. Step 4: Simplify right side
    8,881.57x = 60,092,589.97
  5. Step 5: Solve for x
    x = 60,092,589.97/8,881.57
  6. Step 6: Final answer
    x = 6,765.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.