Home / 3,138.38-4,334.44-2,141.90

Finding the Fourth Proportional to 3,138.38, 4,334.44 and 2,141.90

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Solution

The fourth proportional to 3,138.38, 4,334.44 and 2,141.90 is: 2,958.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.38 : 4,334.44 = 2,141.90 : x
  2. Step 2: Convert to fraction form
    3,138.38/4,334.44 = 2,141.90/x
  3. Step 3: Cross multiply
    3,138.38x = 4,334.44 × 2,141.90
  4. Step 4: Simplify right side
    3,138.38x = 9,283,937.04
  5. Step 5: Solve for x
    x = 9,283,937.04/3,138.38
  6. Step 6: Final answer
    x = 2,958.19

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Half 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.