Home / 3,923.12-5,413.32-2,154.80

Finding the Fourth Proportional to 3,923.12, 5,413.32 and 2,154.80

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Solution

The fourth proportional to 3,923.12, 5,413.32 and 2,154.80 is: 2,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.12 : 5,413.32 = 2,154.80 : x
  2. Step 2: Convert to fraction form
    3,923.12/5,413.32 = 2,154.80/x
  3. Step 3: Cross multiply
    3,923.12x = 5,413.32 × 2,154.80
  4. Step 4: Simplify right side
    3,923.12x = 11,664,621.94
  5. Step 5: Solve for x
    x = 11,664,621.94/3,923.12
  6. Step 6: Final answer
    x = 2,973.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.