Home / 3,922.84-5,413.71-2,431.54

Finding the Fourth Proportional to 3,922.84, 5,413.71 and 2,431.54

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Solution

The fourth proportional to 3,922.84, 5,413.71 and 2,431.54 is: 3,355.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.84 : 5,413.71 = 2,431.54 : x
  2. Step 2: Convert to fraction form
    3,922.84/5,413.71 = 2,431.54/x
  3. Step 3: Cross multiply
    3,922.84x = 5,413.71 × 2,431.54
  4. Step 4: Simplify right side
    3,922.84x = 13,163,652.41
  5. Step 5: Solve for x
    x = 13,163,652.41/3,922.84
  6. Step 6: Final answer
    x = 3,355.64

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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.