Home / 3,198.36-4,413.92-1,939.62

Finding the Fourth Proportional to 3,198.36, 4,413.92 and 1,939.62

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Solution

The fourth proportional to 3,198.36, 4,413.92 and 1,939.62 is: 2,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.36 : 4,413.92 = 1,939.62 : x
  2. Step 2: Convert to fraction form
    3,198.36/4,413.92 = 1,939.62/x
  3. Step 3: Cross multiply
    3,198.36x = 4,413.92 × 1,939.62
  4. Step 4: Simplify right side
    3,198.36x = 8,561,317.81
  5. Step 5: Solve for x
    x = 8,561,317.81/3,198.36
  6. Step 6: Final answer
    x = 2,676.78

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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.