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Finding the Third Proportional to 3,428 and 3,734

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Solution

The third proportional to 3,428 and 3,734 is: 4,067.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428 : 3,734 = 3,734 : x
  2. Step 2: Convert to fraction form
    3,428/3,734 = 3,734/x
  3. Step 3: Cross multiply
    3,428x = 3,734 × 3,734
  4. Step 4: Simplify right side
    3,428x = 13,942,756
  5. Step 5: Solve for x
    x = 13,942,756/3,428
  6. Step 6: Final answer
    x = 4,067.32

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.