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Finding the Third Proportional to 1,938 and 4,449

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Solution

The third proportional to 1,938 and 4,449 is: 10,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938 : 4,449 = 4,449 : x
  2. Step 2: Convert to fraction form
    1,938/4,449 = 4,449/x
  3. Step 3: Cross multiply
    1,938x = 4,449 × 4,449
  4. Step 4: Simplify right side
    1,938x = 19,793,601
  5. Step 5: Solve for x
    x = 19,793,601/1,938
  6. Step 6: Final answer
    x = 10,213.42

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.