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Finding the Fourth Proportional to 8,387.56, 11,572.46 and 5,404.44

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Solution

The fourth proportional to 8,387.56, 11,572.46 and 5,404.44 is: 7,456.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.56 : 11,572.46 = 5,404.44 : x
  2. Step 2: Convert to fraction form
    8,387.56/11,572.46 = 5,404.44/x
  3. Step 3: Cross multiply
    8,387.56x = 11,572.46 × 5,404.44
  4. Step 4: Simplify right side
    8,387.56x = 62,542,665.72
  5. Step 5: Solve for x
    x = 62,542,665.72/8,387.56
  6. Step 6: Final answer
    x = 7,456.60

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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.