Home / 3,145.43-4,339.11-2,150.75

Finding the Fourth Proportional to 3,145.43, 4,339.11 and 2,150.75

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Solution

The fourth proportional to 3,145.43, 4,339.11 and 2,150.75 is: 2,966.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.43 : 4,339.11 = 2,150.75 : x
  2. Step 2: Convert to fraction form
    3,145.43/4,339.11 = 2,150.75/x
  3. Step 3: Cross multiply
    3,145.43x = 4,339.11 × 2,150.75
  4. Step 4: Simplify right side
    3,145.43x = 9,332,340.83
  5. Step 5: Solve for x
    x = 9,332,340.83/3,145.43
  6. Step 6: Final answer
    x = 2,966.95

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Half scale
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Double scale
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1.5x scale

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.