Home / 3,198.85-4,413.64-1,801.60

Finding the Fourth Proportional to 3,198.85, 4,413.64 and 1,801.60

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Solution

The fourth proportional to 3,198.85, 4,413.64 and 1,801.60 is: 2,485.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.85 : 4,413.64 = 1,801.60 : x
  2. Step 2: Convert to fraction form
    3,198.85/4,413.64 = 1,801.60/x
  3. Step 3: Cross multiply
    3,198.85x = 4,413.64 × 1,801.60
  4. Step 4: Simplify right side
    3,198.85x = 7,951,613.82
  5. Step 5: Solve for x
    x = 7,951,613.82/3,198.85
  6. Step 6: Final answer
    x = 2,485.77

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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.