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Finding the Third Proportional to 3,975 and 5,274.75

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Solution

The third proportional to 3,975 and 5,274.75 is: 6,999.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975 : 5,274.75 = 5,274.75 : x
  2. Step 2: Convert to fraction form
    3,975/5,274.75 = 5,274.75/x
  3. Step 3: Cross multiply
    3,975x = 5,274.75 × 5,274.75
  4. Step 4: Simplify right side
    3,975x = 27,822,987.56
  5. Step 5: Solve for x
    x = 27,822,987.56/3,975
  6. Step 6: Final answer
    x = 6,999.49

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.