Home / 7,179.12-9,908.38-3,993.44

Finding the Fourth Proportional to 7,179.12, 9,908.38 and 3,993.44

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Solution

The fourth proportional to 7,179.12, 9,908.38 and 3,993.44 is: 5,511.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.12 : 9,908.38 = 3,993.44 : x
  2. Step 2: Convert to fraction form
    7,179.12/9,908.38 = 3,993.44/x
  3. Step 3: Cross multiply
    7,179.12x = 9,908.38 × 3,993.44
  4. Step 4: Simplify right side
    7,179.12x = 39,568,521.03
  5. Step 5: Solve for x
    x = 39,568,521.03/7,179.12
  6. Step 6: Final answer
    x = 5,511.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.