Home / 2,821.64-4,231.85-1,361.21

Finding the Fourth Proportional to 2,821.64, 4,231.85 and 1,361.21

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Solution

The fourth proportional to 2,821.64, 4,231.85 and 1,361.21 is: 2,041.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.64 : 4,231.85 = 1,361.21 : x
  2. Step 2: Convert to fraction form
    2,821.64/4,231.85 = 1,361.21/x
  3. Step 3: Cross multiply
    2,821.64x = 4,231.85 × 1,361.21
  4. Step 4: Simplify right side
    2,821.64x = 5,760,408.57
  5. Step 5: Solve for x
    x = 5,760,408.57/2,821.64
  6. Step 6: Final answer
    x = 2,041.51

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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.