Home / 3,928.38-5,891.82-1,155.18

Finding the Fourth Proportional to 3,928.38, 5,891.82 and 1,155.18

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Solution

The fourth proportional to 3,928.38, 5,891.82 and 1,155.18 is: 1,732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.38 : 5,891.82 = 1,155.18 : x
  2. Step 2: Convert to fraction form
    3,928.38/5,891.82 = 1,155.18/x
  3. Step 3: Cross multiply
    3,928.38x = 5,891.82 × 1,155.18
  4. Step 4: Simplify right side
    3,928.38x = 6,806,112.63
  5. Step 5: Solve for x
    x = 6,806,112.63/3,928.38
  6. Step 6: Final answer
    x = 1,732.55

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1.5x scale

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.