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Finding the Third Proportional to 2,163.38 and 5,231.25

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Solution

The third proportional to 2,163.38 and 5,231.25 is: 12,649.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.38 : 5,231.25 = 5,231.25 : x
  2. Step 2: Convert to fraction form
    2,163.38/5,231.25 = 5,231.25/x
  3. Step 3: Cross multiply
    2,163.38x = 5,231.25 × 5,231.25
  4. Step 4: Simplify right side
    2,163.38x = 27,365,976.56
  5. Step 5: Solve for x
    x = 27,365,976.56/2,163.38
  6. Step 6: Final answer
    x = 12,649.67

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.