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Finding the Third Proportional to 5,487.75 and 8,170.88

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Solution

The third proportional to 5,487.75 and 8,170.88 is: 12,165.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.75 : 8,170.88 = 8,170.88 : x
  2. Step 2: Convert to fraction form
    5,487.75/8,170.88 = 8,170.88/x
  3. Step 3: Cross multiply
    5,487.75x = 8,170.88 × 8,170.88
  4. Step 4: Simplify right side
    5,487.75x = 66,763,198.27
  5. Step 5: Solve for x
    x = 66,763,198.27/5,487.75
  6. Step 6: Final answer
    x = 12,165.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.