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Finding the Third Proportional to 2,684 and 6,872

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Solution

The third proportional to 2,684 and 6,872 is: 17,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,684 : 6,872 = 6,872 : x
  2. Step 2: Convert to fraction form
    2,684/6,872 = 6,872/x
  3. Step 3: Cross multiply
    2,684x = 6,872 × 6,872
  4. Step 4: Simplify right side
    2,684x = 47,224,384
  5. Step 5: Solve for x
    x = 47,224,384/2,684
  6. Step 6: Final answer
    x = 17,594.78

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.