Home / 3,431.21-5,146.82-834.13

Finding the Fourth Proportional to 3,431.21, 5,146.82 and 834.13

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Solution

The fourth proportional to 3,431.21, 5,146.82 and 834.13 is: 1,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.21 : 5,146.82 = 834.13 : x
  2. Step 2: Convert to fraction form
    3,431.21/5,146.82 = 834.13/x
  3. Step 3: Cross multiply
    3,431.21x = 5,146.82 × 834.13
  4. Step 4: Simplify right side
    3,431.21x = 4,293,112.80
  5. Step 5: Solve for x
    x = 4,293,112.80/3,431.21
  6. Step 6: Final answer
    x = 1,251.20

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,432.21, 5,148.32 and 835.13
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.