Home / 2,758.80-4,138.19-1,198.61

Finding the Fourth Proportional to 2,758.80, 4,138.19 and 1,198.61

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Solution

The fourth proportional to 2,758.80, 4,138.19 and 1,198.61 is: 1,797.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.80 : 4,138.19 = 1,198.61 : x
  2. Step 2: Convert to fraction form
    2,758.80/4,138.19 = 1,198.61/x
  3. Step 3: Cross multiply
    2,758.80x = 4,138.19 × 1,198.61
  4. Step 4: Simplify right side
    2,758.80x = 4,960,055.22
  5. Step 5: Solve for x
    x = 4,960,055.22/2,758.80
  6. Step 6: Final answer
    x = 1,797.90

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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.