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Finding the Third Proportional to 3,438 and 3,714.75

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Solution

The third proportional to 3,438 and 3,714.75 is: 4,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438 : 3,714.75 = 3,714.75 : x
  2. Step 2: Convert to fraction form
    3,438/3,714.75 = 3,714.75/x
  3. Step 3: Cross multiply
    3,438x = 3,714.75 × 3,714.75
  4. Step 4: Simplify right side
    3,438x = 13,799,367.56
  5. Step 5: Solve for x
    x = 13,799,367.56/3,438
  6. Step 6: Final answer
    x = 4,013.78

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.