Home / 3,261.28-4,891.91-2,821.22

Finding the Fourth Proportional to 3,261.28, 4,891.91 and 2,821.22

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Solution

The fourth proportional to 3,261.28, 4,891.91 and 2,821.22 is: 4,231.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.28 : 4,891.91 = 2,821.22 : x
  2. Step 2: Convert to fraction form
    3,261.28/4,891.91 = 2,821.22/x
  3. Step 3: Cross multiply
    3,261.28x = 4,891.91 × 2,821.22
  4. Step 4: Simplify right side
    3,261.28x = 13,801,154.33
  5. Step 5: Solve for x
    x = 13,801,154.33/3,261.28
  6. Step 6: Final answer
    x = 4,231.82

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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.