Home / 3,431.20-5,146.78-834.16

Finding the Fourth Proportional to 3,431.20, 5,146.78 and 834.16

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Solution

The fourth proportional to 3,431.20, 5,146.78 and 834.16 is: 1,251.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.20 : 5,146.78 = 834.16 : x
  2. Step 2: Convert to fraction form
    3,431.20/5,146.78 = 834.16/x
  3. Step 3: Cross multiply
    3,431.20x = 5,146.78 × 834.16
  4. Step 4: Simplify right side
    3,431.20x = 4,293,238.00
  5. Step 5: Solve for x
    x = 4,293,238.00/3,431.20
  6. Step 6: Final answer
    x = 1,251.24

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Similar ratio
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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.