Home / 3,923.15-5,413.98-2,154.79

Finding the Fourth Proportional to 3,923.15, 5,413.98 and 2,154.79

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Solution

The fourth proportional to 3,923.15, 5,413.98 and 2,154.79 is: 2,973.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.15 : 5,413.98 = 2,154.79 : x
  2. Step 2: Convert to fraction form
    3,923.15/5,413.98 = 2,154.79/x
  3. Step 3: Cross multiply
    3,923.15x = 5,413.98 × 2,154.79
  4. Step 4: Simplify right side
    3,923.15x = 11,665,989.96
  5. Step 5: Solve for x
    x = 11,665,989.96/3,923.15
  6. Step 6: Final answer
    x = 2,973.63

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1.5x scale

Why These Related Problems?

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