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Finding the Fourth Proportional to 4,231.38, 5,839.38 and 2,638.68

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Solution

The fourth proportional to 4,231.38, 5,839.38 and 2,638.68 is: 3,641.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,231.38 : 5,839.38 = 2,638.68 : x
  2. Step 2: Convert to fraction form
    4,231.38/5,839.38 = 2,638.68/x
  3. Step 3: Cross multiply
    4,231.38x = 5,839.38 × 2,638.68
  4. Step 4: Simplify right side
    4,231.38x = 15,408,255.22
  5. Step 5: Solve for x
    x = 15,408,255.22/4,231.38
  6. Step 6: Final answer
    x = 3,641.43

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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.