Home / 3,391.92-5,079.42-2,155.68

Finding the Fourth Proportional to 3,391.92, 5,079.42 and 2,155.68

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Solution

The fourth proportional to 3,391.92, 5,079.42 and 2,155.68 is: 3,228.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.92 : 5,079.42 = 2,155.68 : x
  2. Step 2: Convert to fraction form
    3,391.92/5,079.42 = 2,155.68/x
  3. Step 3: Cross multiply
    3,391.92x = 5,079.42 × 2,155.68
  4. Step 4: Simplify right side
    3,391.92x = 10,949,604.11
  5. Step 5: Solve for x
    x = 10,949,604.11/3,391.92
  6. Step 6: Final answer
    x = 3,228.14

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1.5x scale

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.