Home / 3,218.37-4,821.31-2,119.42

Finding the Fourth Proportional to 3,218.37, 4,821.31 and 2,119.42

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Solution

The fourth proportional to 3,218.37, 4,821.31 and 2,119.42 is: 3,175.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.37 : 4,821.31 = 2,119.42 : x
  2. Step 2: Convert to fraction form
    3,218.37/4,821.31 = 2,119.42/x
  3. Step 3: Cross multiply
    3,218.37x = 4,821.31 × 2,119.42
  4. Step 4: Simplify right side
    3,218.37x = 10,218,380.84
  5. Step 5: Solve for x
    x = 10,218,380.84/3,218.37
  6. Step 6: Final answer
    x = 3,175.02

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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.