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Finding the Third Proportional to 2,487 and 3,386

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Solution

The third proportional to 2,487 and 3,386 is: 4,609.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487 : 3,386 = 3,386 : x
  2. Step 2: Convert to fraction form
    2,487/3,386 = 3,386/x
  3. Step 3: Cross multiply
    2,487x = 3,386 × 3,386
  4. Step 4: Simplify right side
    2,487x = 11,464,996
  5. Step 5: Solve for x
    x = 11,464,996/2,487
  6. Step 6: Final answer
    x = 4,609.97

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.