Home / 3,368.21-5,049.20-2,131.88

Finding the Fourth Proportional to 3,368.21, 5,049.20 and 2,131.88

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Solution

The fourth proportional to 3,368.21, 5,049.20 and 2,131.88 is: 3,195.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.21 : 5,049.20 = 2,131.88 : x
  2. Step 2: Convert to fraction form
    3,368.21/5,049.20 = 2,131.88/x
  3. Step 3: Cross multiply
    3,368.21x = 5,049.20 × 2,131.88
  4. Step 4: Simplify right side
    3,368.21x = 10,764,268.58
  5. Step 5: Solve for x
    x = 10,764,268.58/3,368.21
  6. Step 6: Final answer
    x = 3,195.85

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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.