Home / 5,413.80-8,117.66-2,125.61

Finding the Fourth Proportional to 5,413.80, 8,117.66 and 2,125.61

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Solution

The fourth proportional to 5,413.80, 8,117.66 and 2,125.61 is: 3,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.80 : 8,117.66 = 2,125.61 : x
  2. Step 2: Convert to fraction form
    5,413.80/8,117.66 = 2,125.61/x
  3. Step 3: Cross multiply
    5,413.80x = 8,117.66 × 2,125.61
  4. Step 4: Simplify right side
    5,413.80x = 17,254,928.06
  5. Step 5: Solve for x
    x = 17,254,928.06/5,413.80
  6. Step 6: Final answer
    x = 3,187.21

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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.