Home / 3,198.78-4,795.38-1,118.48

Finding the Fourth Proportional to 3,198.78, 4,795.38 and 1,118.48

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Solution

The fourth proportional to 3,198.78, 4,795.38 and 1,118.48 is: 1,676.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.78 : 4,795.38 = 1,118.48 : x
  2. Step 2: Convert to fraction form
    3,198.78/4,795.38 = 1,118.48/x
  3. Step 3: Cross multiply
    3,198.78x = 4,795.38 × 1,118.48
  4. Step 4: Simplify right side
    3,198.78x = 5,363,512.65
  5. Step 5: Solve for x
    x = 5,363,512.65/3,198.78
  6. Step 6: Final answer
    x = 1,676.74

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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.