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Finding the Third Proportional to 7,676 and 11,719

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Solution

The third proportional to 7,676 and 11,719 is: 17,891.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,676 : 11,719 = 11,719 : x
  2. Step 2: Convert to fraction form
    7,676/11,719 = 11,719/x
  3. Step 3: Cross multiply
    7,676x = 11,719 × 11,719
  4. Step 4: Simplify right side
    7,676x = 137,334,961
  5. Step 5: Solve for x
    x = 137,334,961/7,676
  6. Step 6: Final answer
    x = 17,891.47

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.