Home / 3,319.97-4,979.34-1,098.72

Finding the Fourth Proportional to 3,319.97, 4,979.34 and 1,098.72

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Solution

The fourth proportional to 3,319.97, 4,979.34 and 1,098.72 is: 1,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.97 : 4,979.34 = 1,098.72 : x
  2. Step 2: Convert to fraction form
    3,319.97/4,979.34 = 1,098.72/x
  3. Step 3: Cross multiply
    3,319.97x = 4,979.34 × 1,098.72
  4. Step 4: Simplify right side
    3,319.97x = 5,470,900.44
  5. Step 5: Solve for x
    x = 5,470,900.44/3,319.97
  6. Step 6: Final answer
    x = 1,647.88

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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.