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Finding the Third Proportional to 6,618 and 7,374

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Solution

The third proportional to 6,618 and 7,374 is: 8,216.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618 : 7,374 = 7,374 : x
  2. Step 2: Convert to fraction form
    6,618/7,374 = 7,374/x
  3. Step 3: Cross multiply
    6,618x = 7,374 × 7,374
  4. Step 4: Simplify right side
    6,618x = 54,375,876
  5. Step 5: Solve for x
    x = 54,375,876/6,618
  6. Step 6: Final answer
    x = 8,216.36

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.