Home / 3,972.20-5,475.03-2,791.22

Finding the Fourth Proportional to 3,972.20, 5,475.03 and 2,791.22

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Solution

The fourth proportional to 3,972.20, 5,475.03 and 2,791.22 is: 3,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.20 : 5,475.03 = 2,791.22 : x
  2. Step 2: Convert to fraction form
    3,972.20/5,475.03 = 2,791.22/x
  3. Step 3: Cross multiply
    3,972.20x = 5,475.03 × 2,791.22
  4. Step 4: Simplify right side
    3,972.20x = 15,282,013.24
  5. Step 5: Solve for x
    x = 15,282,013.24/3,972.20
  6. Step 6: Final answer
    x = 3,847.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.