Home / 3,413.64-5,121.69-1,192.80

Finding the Fourth Proportional to 3,413.64, 5,121.69 and 1,192.80

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Solution

The fourth proportional to 3,413.64, 5,121.69 and 1,192.80 is: 1,789.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.64 : 5,121.69 = 1,192.80 : x
  2. Step 2: Convert to fraction form
    3,413.64/5,121.69 = 1,192.80/x
  3. Step 3: Cross multiply
    3,413.64x = 5,121.69 × 1,192.80
  4. Step 4: Simplify right side
    3,413.64x = 6,109,120.26
  5. Step 5: Solve for x
    x = 6,109,120.26/3,413.64
  6. Step 6: Final answer
    x = 1,789.62

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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.