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Finding the Third Proportional to 3,668 and 7,873

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Solution

The third proportional to 3,668 and 7,873 is: 16,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,668 : 7,873 = 7,873 : x
  2. Step 2: Convert to fraction form
    3,668/7,873 = 7,873/x
  3. Step 3: Cross multiply
    3,668x = 7,873 × 7,873
  4. Step 4: Simplify right side
    3,668x = 61,984,129
  5. Step 5: Solve for x
    x = 61,984,129/3,668
  6. Step 6: Final answer
    x = 16,898.62

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.