Home / 3,923.10-5,413.84-2,154.74

Finding the Fourth Proportional to 3,923.10, 5,413.84 and 2,154.74

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Solution

The fourth proportional to 3,923.10, 5,413.84 and 2,154.74 is: 2,973.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.10 : 5,413.84 = 2,154.74 : x
  2. Step 2: Convert to fraction form
    3,923.10/5,413.84 = 2,154.74/x
  3. Step 3: Cross multiply
    3,923.10x = 5,413.84 × 2,154.74
  4. Step 4: Simplify right side
    3,923.10x = 11,665,385.15
  5. Step 5: Solve for x
    x = 11,665,385.15/3,923.10
  6. Step 6: Final answer
    x = 2,973.51

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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.