Home / 3,198.17-4,413.18-1,781.72

Finding the Fourth Proportional to 3,198.17, 4,413.18 and 1,781.72

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Solution

The fourth proportional to 3,198.17, 4,413.18 and 1,781.72 is: 2,458.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.17 : 4,413.18 = 1,781.72 : x
  2. Step 2: Convert to fraction form
    3,198.17/4,413.18 = 1,781.72/x
  3. Step 3: Cross multiply
    3,198.17x = 4,413.18 × 1,781.72
  4. Step 4: Simplify right side
    3,198.17x = 7,863,051.07
  5. Step 5: Solve for x
    x = 7,863,051.07/3,198.17
  6. Step 6: Final answer
    x = 2,458.61

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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.