Home / 3,972.75-5,961.87-1,375.70

Finding the Fourth Proportional to 3,972.75, 5,961.87 and 1,375.70

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Solution

The fourth proportional to 3,972.75, 5,961.87 and 1,375.70 is: 2,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.75 : 5,961.87 = 1,375.70 : x
  2. Step 2: Convert to fraction form
    3,972.75/5,961.87 = 1,375.70/x
  3. Step 3: Cross multiply
    3,972.75x = 5,961.87 × 1,375.70
  4. Step 4: Simplify right side
    3,972.75x = 8,201,714.75
  5. Step 5: Solve for x
    x = 8,201,714.75/3,972.75
  6. Step 6: Final answer
    x = 2,064.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.