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Finding the Third Proportional to 3,888 and 8,381.25

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Solution

The third proportional to 3,888 and 8,381.25 is: 18,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888 : 8,381.25 = 8,381.25 : x
  2. Step 2: Convert to fraction form
    3,888/8,381.25 = 8,381.25/x
  3. Step 3: Cross multiply
    3,888x = 8,381.25 × 8,381.25
  4. Step 4: Simplify right side
    3,888x = 70,245,351.56
  5. Step 5: Solve for x
    x = 70,245,351.56/3,888
  6. Step 6: Final answer
    x = 18,067.22

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.