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Finding the Third Proportional to 7,115 and 11,163

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Solution

The third proportional to 7,115 and 11,163 is: 17,514.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115 : 11,163 = 11,163 : x
  2. Step 2: Convert to fraction form
    7,115/11,163 = 11,163/x
  3. Step 3: Cross multiply
    7,115x = 11,163 × 11,163
  4. Step 4: Simplify right side
    7,115x = 124,612,569
  5. Step 5: Solve for x
    x = 124,612,569/7,115
  6. Step 6: Final answer
    x = 17,514.06

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.