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Finding the Third Proportional to 5,891 and 7,147

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Solution

The third proportional to 5,891 and 7,147 is: 8,670.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891 : 7,147 = 7,147 : x
  2. Step 2: Convert to fraction form
    5,891/7,147 = 7,147/x
  3. Step 3: Cross multiply
    5,891x = 7,147 × 7,147
  4. Step 4: Simplify right side
    5,891x = 51,079,609
  5. Step 5: Solve for x
    x = 51,079,609/5,891
  6. Step 6: Final answer
    x = 8,670.79

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.