Home / 5,421.27-8,138.39-3,231.03

Finding the Fourth Proportional to 5,421.27, 8,138.39 and 3,231.03

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Solution

The fourth proportional to 5,421.27, 8,138.39 and 3,231.03 is: 4,850.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.27 : 8,138.39 = 3,231.03 : x
  2. Step 2: Convert to fraction form
    5,421.27/8,138.39 = 3,231.03/x
  3. Step 3: Cross multiply
    5,421.27x = 8,138.39 × 3,231.03
  4. Step 4: Simplify right side
    5,421.27x = 26,295,366.09
  5. Step 5: Solve for x
    x = 26,295,366.09/5,421.27
  6. Step 6: Final answer
    x = 4,850.41

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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.