Home / 5,413.38-8,120.07-1,309.38

Finding the Fourth Proportional to 5,413.38, 8,120.07 and 1,309.38

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Solution

The fourth proportional to 5,413.38, 8,120.07 and 1,309.38 is: 1,964.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.38 : 8,120.07 = 1,309.38 : x
  2. Step 2: Convert to fraction form
    5,413.38/8,120.07 = 1,309.38/x
  3. Step 3: Cross multiply
    5,413.38x = 8,120.07 × 1,309.38
  4. Step 4: Simplify right side
    5,413.38x = 10,632,216.66
  5. Step 5: Solve for x
    x = 10,632,216.66/5,413.38
  6. Step 6: Final answer
    x = 1,964.06

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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.