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Finding the Third Proportional to 1,638 and 3,849

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Solution

The third proportional to 1,638 and 3,849 is: 9,044.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638 : 3,849 = 3,849 : x
  2. Step 2: Convert to fraction form
    1,638/3,849 = 3,849/x
  3. Step 3: Cross multiply
    1,638x = 3,849 × 3,849
  4. Step 4: Simplify right side
    1,638x = 14,814,801
  5. Step 5: Solve for x
    x = 14,814,801/1,638
  6. Step 6: Final answer
    x = 9,044.45

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.