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Finding the Third Proportional to 7,750 and 11,072

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Solution

The third proportional to 7,750 and 11,072 is: 15,817.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750 : 11,072 = 11,072 : x
  2. Step 2: Convert to fraction form
    7,750/11,072 = 11,072/x
  3. Step 3: Cross multiply
    7,750x = 11,072 × 11,072
  4. Step 4: Simplify right side
    7,750x = 122,589,184
  5. Step 5: Solve for x
    x = 122,589,184/7,750
  6. Step 6: Final answer
    x = 15,817.96

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.