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Finding the Fourth Proportional to 8,171.92, 11,276.49 and 5,522.89

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Solution

The fourth proportional to 8,171.92, 11,276.49 and 5,522.89 is: 7,621.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171.92 : 11,276.49 = 5,522.89 : x
  2. Step 2: Convert to fraction form
    8,171.92/11,276.49 = 5,522.89/x
  3. Step 3: Cross multiply
    8,171.92x = 11,276.49 × 5,522.89
  4. Step 4: Simplify right side
    8,171.92x = 62,278,813.86
  5. Step 5: Solve for x
    x = 62,278,813.86/8,171.92
  6. Step 6: Final answer
    x = 7,621.07

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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.