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Finding the Third Proportional to 3,408 and 4,487

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Solution

The third proportional to 3,408 and 4,487 is: 5,907.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408 : 4,487 = 4,487 : x
  2. Step 2: Convert to fraction form
    3,408/4,487 = 4,487/x
  3. Step 3: Cross multiply
    3,408x = 4,487 × 4,487
  4. Step 4: Simplify right side
    3,408x = 20,133,169
  5. Step 5: Solve for x
    x = 20,133,169/3,408
  6. Step 6: Final answer
    x = 5,907.62

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.