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Finding the Third Proportional to 3,975 and 8,745

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Solution

The third proportional to 3,975 and 8,745 is: 19,239

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975 : 8,745 = 8,745 : x
  2. Step 2: Convert to fraction form
    3,975/8,745 = 8,745/x
  3. Step 3: Cross multiply
    3,975x = 8,745 × 8,745
  4. Step 4: Simplify right side
    3,975x = 76,475,025
  5. Step 5: Solve for x
    x = 76,475,025/3,975
  6. Step 6: Final answer
    x = 19,239

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.