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Finding the Third Proportional to 3,912.68 and 8,571.45

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Solution

The third proportional to 3,912.68 and 8,571.45 is: 18,777.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.68 : 8,571.45 = 8,571.45 : x
  2. Step 2: Convert to fraction form
    3,912.68/8,571.45 = 8,571.45/x
  3. Step 3: Cross multiply
    3,912.68x = 8,571.45 × 8,571.45
  4. Step 4: Simplify right side
    3,912.68x = 73,469,674.75
  5. Step 5: Solve for x
    x = 73,469,674.75/3,912.68
  6. Step 6: Final answer
    x = 18,777.33

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.