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Finding the Third Proportional to 5,424.78 and 8,454.38

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Solution

The third proportional to 5,424.78 and 8,454.38 is: 13,175.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.78 : 8,454.38 = 8,454.38 : x
  2. Step 2: Convert to fraction form
    5,424.78/8,454.38 = 8,454.38/x
  3. Step 3: Cross multiply
    5,424.78x = 8,454.38 × 8,454.38
  4. Step 4: Simplify right side
    5,424.78x = 71,476,456.64
  5. Step 5: Solve for x
    x = 71,476,456.64/5,424.78
  6. Step 6: Final answer
    x = 13,175.91

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.