Home / 5,422.36-8,138.34-2,791.72

Finding the Fourth Proportional to 5,422.36, 8,138.34 and 2,791.72

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Solution

The fourth proportional to 5,422.36, 8,138.34 and 2,791.72 is: 4,190.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.36 : 8,138.34 = 2,791.72 : x
  2. Step 2: Convert to fraction form
    5,422.36/8,138.34 = 2,791.72/x
  3. Step 3: Cross multiply
    5,422.36x = 8,138.34 × 2,791.72
  4. Step 4: Simplify right side
    5,422.36x = 22,719,966.54
  5. Step 5: Solve for x
    x = 22,719,966.54/5,422.36
  6. Step 6: Final answer
    x = 4,190.05

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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.