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Finding the Third Proportional to 8,130 and 11,519

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Solution

The third proportional to 8,130 and 11,519 is: 16,320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130 : 11,519 = 11,519 : x
  2. Step 2: Convert to fraction form
    8,130/11,519 = 11,519/x
  3. Step 3: Cross multiply
    8,130x = 11,519 × 11,519
  4. Step 4: Simplify right side
    8,130x = 132,687,361
  5. Step 5: Solve for x
    x = 132,687,361/8,130
  6. Step 6: Final answer
    x = 16,320.71

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.