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Finding the Third Proportional to 3,456 and 6,561

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Solution

The third proportional to 3,456 and 6,561 is: 12,455.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,456 : 6,561 = 6,561 : x
  2. Step 2: Convert to fraction form
    3,456/6,561 = 6,561/x
  3. Step 3: Cross multiply
    3,456x = 6,561 × 6,561
  4. Step 4: Simplify right side
    3,456x = 43,046,721
  5. Step 5: Solve for x
    x = 43,046,721/3,456
  6. Step 6: Final answer
    x = 12,455.65

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.