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Finding the Third Proportional to 5,687.72 and 8,740.41

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Solution

The third proportional to 5,687.72 and 8,740.41 is: 13,431.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.72 : 8,740.41 = 8,740.41 : x
  2. Step 2: Convert to fraction form
    5,687.72/8,740.41 = 8,740.41/x
  3. Step 3: Cross multiply
    5,687.72x = 8,740.41 × 8,740.41
  4. Step 4: Simplify right side
    5,687.72x = 76,394,701.42
  5. Step 5: Solve for x
    x = 76,394,701.42/5,687.72
  6. Step 6: Final answer
    x = 13,431.52

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.