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Finding the Third Proportional to 6,840 and 12,976

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Solution

The third proportional to 6,840 and 12,976 is: 24,616.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840 : 12,976 = 12,976 : x
  2. Step 2: Convert to fraction form
    6,840/12,976 = 12,976/x
  3. Step 3: Cross multiply
    6,840x = 12,976 × 12,976
  4. Step 4: Simplify right side
    6,840x = 168,376,576
  5. Step 5: Solve for x
    x = 168,376,576/6,840
  6. Step 6: Final answer
    x = 24,616.46

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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.