Home / 3,912.55-5,393.73-2,791.57

Finding the Fourth Proportional to 3,912.55, 5,393.73 and 2,791.57

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Solution

The fourth proportional to 3,912.55, 5,393.73 and 2,791.57 is: 3,848.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.55 : 5,393.73 = 2,791.57 : x
  2. Step 2: Convert to fraction form
    3,912.55/5,393.73 = 2,791.57/x
  3. Step 3: Cross multiply
    3,912.55x = 5,393.73 × 2,791.57
  4. Step 4: Simplify right side
    3,912.55x = 15,056,974.86
  5. Step 5: Solve for x
    x = 15,056,974.86/3,912.55
  6. Step 6: Final answer
    x = 3,848.38

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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.