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Finding the Third Proportional to 3,919 and 8,249

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Solution

The third proportional to 3,919 and 8,249 is: 17,363.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919 : 8,249 = 8,249 : x
  2. Step 2: Convert to fraction form
    3,919/8,249 = 8,249/x
  3. Step 3: Cross multiply
    3,919x = 8,249 × 8,249
  4. Step 4: Simplify right side
    3,919x = 68,046,001
  5. Step 5: Solve for x
    x = 68,046,001/3,919
  6. Step 6: Final answer
    x = 17,363.10

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.