Home / 5,418.19-8,125.26-2,131.75

Finding the Fourth Proportional to 5,418.19, 8,125.26 and 2,131.75

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Solution

The fourth proportional to 5,418.19, 8,125.26 and 2,131.75 is: 3,196.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.19 : 8,125.26 = 2,131.75 : x
  2. Step 2: Convert to fraction form
    5,418.19/8,125.26 = 2,131.75/x
  3. Step 3: Cross multiply
    5,418.19x = 8,125.26 × 2,131.75
  4. Step 4: Simplify right side
    5,418.19x = 17,321,023.01
  5. Step 5: Solve for x
    x = 17,321,023.01/5,418.19
  6. Step 6: Final answer
    x = 3,196.83

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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.