Home / 5,413.78-8,120.13-3,669.98

Finding the Fourth Proportional to 5,413.78, 8,120.13 and 3,669.98

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Solution

The fourth proportional to 5,413.78, 8,120.13 and 3,669.98 is: 5,504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.78 : 8,120.13 = 3,669.98 : x
  2. Step 2: Convert to fraction form
    5,413.78/8,120.13 = 3,669.98/x
  3. Step 3: Cross multiply
    5,413.78x = 8,120.13 × 3,669.98
  4. Step 4: Simplify right side
    5,413.78x = 29,800,737.71
  5. Step 5: Solve for x
    x = 29,800,737.71/5,413.78
  6. Step 6: Final answer
    x = 5,504.61

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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.