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Finding the Third Proportional to 8,372 and 11,480

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Solution

The third proportional to 8,372 and 11,480 is: 15,741.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372 : 11,480 = 11,480 : x
  2. Step 2: Convert to fraction form
    8,372/11,480 = 11,480/x
  3. Step 3: Cross multiply
    8,372x = 11,480 × 11,480
  4. Step 4: Simplify right side
    8,372x = 131,790,400
  5. Step 5: Solve for x
    x = 131,790,400/8,372
  6. Step 6: Final answer
    x = 15,741.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.