Home / 3,879.40-5,363.94-3,387.52

Finding the Fourth Proportional to 3,879.40, 5,363.94 and 3,387.52

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Solution

The fourth proportional to 3,879.40, 5,363.94 and 3,387.52 is: 4,683.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.40 : 5,363.94 = 3,387.52 : x
  2. Step 2: Convert to fraction form
    3,879.40/5,363.94 = 3,387.52/x
  3. Step 3: Cross multiply
    3,879.40x = 5,363.94 × 3,387.52
  4. Step 4: Simplify right side
    3,879.40x = 18,170,454.03
  5. Step 5: Solve for x
    x = 18,170,454.03/3,879.40
  6. Step 6: Final answer
    x = 4,683.83

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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.