Home / 5,198.15-7,797.27-2,078.42

Finding the Fourth Proportional to 5,198.15, 7,797.27 and 2,078.42

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Solution

The fourth proportional to 5,198.15, 7,797.27 and 2,078.42 is: 3,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.15 : 7,797.27 = 2,078.42 : x
  2. Step 2: Convert to fraction form
    5,198.15/7,797.27 = 2,078.42/x
  3. Step 3: Cross multiply
    5,198.15x = 7,797.27 × 2,078.42
  4. Step 4: Simplify right side
    5,198.15x = 16,206,013.61
  5. Step 5: Solve for x
    x = 16,206,013.61/5,198.15
  6. Step 6: Final answer
    x = 3,117.65

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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.