Home / 5,431.50-8,129.17-4,107.96

Finding the Fourth Proportional to 5,431.50, 8,129.17 and 4,107.96

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Solution

The fourth proportional to 5,431.50, 8,129.17 and 4,107.96 is: 6,148.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.50 : 8,129.17 = 4,107.96 : x
  2. Step 2: Convert to fraction form
    5,431.50/8,129.17 = 4,107.96/x
  3. Step 3: Cross multiply
    5,431.50x = 8,129.17 × 4,107.96
  4. Step 4: Simplify right side
    5,431.50x = 33,394,294.92
  5. Step 5: Solve for x
    x = 33,394,294.92/5,431.50
  6. Step 6: Final answer
    x = 6,148.26

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Double scale
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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.