Home / 5,791.35-7,992.06-3,138.75

Finding the Fourth Proportional to 5,791.35, 7,992.06 and 3,138.75

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Solution

The fourth proportional to 5,791.35, 7,992.06 and 3,138.75 is: 4,331.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.35 : 7,992.06 = 3,138.75 : x
  2. Step 2: Convert to fraction form
    5,791.35/7,992.06 = 3,138.75/x
  3. Step 3: Cross multiply
    5,791.35x = 7,992.06 × 3,138.75
  4. Step 4: Simplify right side
    5,791.35x = 25,085,078.33
  5. Step 5: Solve for x
    x = 25,085,078.33/5,791.35
  6. Step 6: Final answer
    x = 4,331.47

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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.