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Finding the Third Proportional to 7,611 and 10,181

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Solution

The third proportional to 7,611 and 10,181 is: 13,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611 : 10,181 = 10,181 : x
  2. Step 2: Convert to fraction form
    7,611/10,181 = 10,181/x
  3. Step 3: Cross multiply
    7,611x = 10,181 × 10,181
  4. Step 4: Simplify right side
    7,611x = 103,652,761
  5. Step 5: Solve for x
    x = 103,652,761/7,611
  6. Step 6: Final answer
    x = 13,618.81

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.