Home / 3,821.20-5,727.48-2,431.12

Finding the Fourth Proportional to 3,821.20, 5,727.48 and 2,431.12

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Solution

The fourth proportional to 3,821.20, 5,727.48 and 2,431.12 is: 3,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.20 : 5,727.48 = 2,431.12 : x
  2. Step 2: Convert to fraction form
    3,821.20/5,727.48 = 2,431.12/x
  3. Step 3: Cross multiply
    3,821.20x = 5,727.48 × 2,431.12
  4. Step 4: Simplify right side
    3,821.20x = 13,924,191.18
  5. Step 5: Solve for x
    x = 13,924,191.18/3,821.20
  6. Step 6: Final answer
    x = 3,643.93

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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.