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Finding the Third Proportional to 1,919 and 3,469

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Solution

The third proportional to 1,919 and 3,469 is: 6,270.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919 : 3,469 = 3,469 : x
  2. Step 2: Convert to fraction form
    1,919/3,469 = 3,469/x
  3. Step 3: Cross multiply
    1,919x = 3,469 × 3,469
  4. Step 4: Simplify right side
    1,919x = 12,033,961
  5. Step 5: Solve for x
    x = 12,033,961/1,919
  6. Step 6: Final answer
    x = 6,270.95

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.