Home / 3,189.38-4,401.85-1,863.86

Finding the Fourth Proportional to 3,189.38, 4,401.85 and 1,863.86

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Solution

The fourth proportional to 3,189.38, 4,401.85 and 1,863.86 is: 2,572.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.38 : 4,401.85 = 1,863.86 : x
  2. Step 2: Convert to fraction form
    3,189.38/4,401.85 = 1,863.86/x
  3. Step 3: Cross multiply
    3,189.38x = 4,401.85 × 1,863.86
  4. Step 4: Simplify right side
    3,189.38x = 8,204,432.14
  5. Step 5: Solve for x
    x = 8,204,432.14/3,189.38
  6. Step 6: Final answer
    x = 2,572.42

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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.