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Finding the Third Proportional to 3,982.50 and 5,589.75

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Solution

The third proportional to 3,982.50 and 5,589.75 is: 7,845.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.50 : 5,589.75 = 5,589.75 : x
  2. Step 2: Convert to fraction form
    3,982.50/5,589.75 = 5,589.75/x
  3. Step 3: Cross multiply
    3,982.50x = 5,589.75 × 5,589.75
  4. Step 4: Simplify right side
    3,982.50x = 31,245,305.06
  5. Step 5: Solve for x
    x = 31,245,305.06/3,982.50
  6. Step 6: Final answer
    x = 7,845.65

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.