Home / 3,821.79-5,728.85-1,481.19

Finding the Fourth Proportional to 3,821.79, 5,728.85 and 1,481.19

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Solution

The fourth proportional to 3,821.79, 5,728.85 and 1,481.19 is: 2,220.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.79 : 5,728.85 = 1,481.19 : x
  2. Step 2: Convert to fraction form
    3,821.79/5,728.85 = 1,481.19/x
  3. Step 3: Cross multiply
    3,821.79x = 5,728.85 × 1,481.19
  4. Step 4: Simplify right side
    3,821.79x = 8,485,507.93
  5. Step 5: Solve for x
    x = 8,485,507.93/3,821.79
  6. Step 6: Final answer
    x = 2,220.30

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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.