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Finding the Third Proportional to 7,251 and 11,658.75

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Solution

The third proportional to 7,251 and 11,658.75 is: 18,745.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,251 : 11,658.75 = 11,658.75 : x
  2. Step 2: Convert to fraction form
    7,251/11,658.75 = 11,658.75/x
  3. Step 3: Cross multiply
    7,251x = 11,658.75 × 11,658.75
  4. Step 4: Simplify right side
    7,251x = 135,926,451.56
  5. Step 5: Solve for x
    x = 135,926,451.56/7,251
  6. Step 6: Final answer
    x = 18,745.89

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.