Home / 3,413.79-5,121.23-1,222.47

Finding the Fourth Proportional to 3,413.79, 5,121.23 and 1,222.47

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Solution

The fourth proportional to 3,413.79, 5,121.23 and 1,222.47 is: 1,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.79 : 5,121.23 = 1,222.47 : x
  2. Step 2: Convert to fraction form
    3,413.79/5,121.23 = 1,222.47/x
  3. Step 3: Cross multiply
    3,413.79x = 5,121.23 × 1,222.47
  4. Step 4: Simplify right side
    3,413.79x = 6,260,553.38
  5. Step 5: Solve for x
    x = 6,260,553.38/3,413.79
  6. Step 6: Final answer
    x = 1,833.90

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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.