Home / 3,158.11-4,358.97-2,151.48

Finding the Fourth Proportional to 3,158.11, 4,358.97 and 2,151.48

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Solution

The fourth proportional to 3,158.11, 4,358.97 and 2,151.48 is: 2,969.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.11 : 4,358.97 = 2,151.48 : x
  2. Step 2: Convert to fraction form
    3,158.11/4,358.97 = 2,151.48/x
  3. Step 3: Cross multiply
    3,158.11x = 4,358.97 × 2,151.48
  4. Step 4: Simplify right side
    3,158.11x = 9,378,236.78
  5. Step 5: Solve for x
    x = 9,378,236.78/3,158.11
  6. Step 6: Final answer
    x = 2,969.57

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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.