Home / 5,135.52-7,081.92-3,879.84

Finding the Fourth Proportional to 5,135.52, 7,081.92 and 3,879.84

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Solution

The fourth proportional to 5,135.52, 7,081.92 and 3,879.84 is: 5,350.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.52 : 7,081.92 = 3,879.84 : x
  2. Step 2: Convert to fraction form
    5,135.52/7,081.92 = 3,879.84/x
  3. Step 3: Cross multiply
    5,135.52x = 7,081.92 × 3,879.84
  4. Step 4: Simplify right side
    5,135.52x = 27,476,716.49
  5. Step 5: Solve for x
    x = 27,476,716.49/5,135.52
  6. Step 6: Final answer
    x = 5,350.33

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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.