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Finding the Third Proportional to 5,289 and 11,519

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Solution

The third proportional to 5,289 and 11,519 is: 25,087.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289 : 11,519 = 11,519 : x
  2. Step 2: Convert to fraction form
    5,289/11,519 = 11,519/x
  3. Step 3: Cross multiply
    5,289x = 11,519 × 11,519
  4. Step 4: Simplify right side
    5,289x = 132,687,361
  5. Step 5: Solve for x
    x = 132,687,361/5,289
  6. Step 6: Final answer
    x = 25,087.42

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.