Home / 3,821.21-5,731.82-1,047.90

Finding the Fourth Proportional to 3,821.21, 5,731.82 and 1,047.90

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Solution

The fourth proportional to 3,821.21, 5,731.82 and 1,047.90 is: 1,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.21 : 5,731.82 = 1,047.90 : x
  2. Step 2: Convert to fraction form
    3,821.21/5,731.82 = 1,047.90/x
  3. Step 3: Cross multiply
    3,821.21x = 5,731.82 × 1,047.90
  4. Step 4: Simplify right side
    3,821.21x = 6,006,374.18
  5. Step 5: Solve for x
    x = 6,006,374.18/3,821.21
  6. Step 6: Final answer
    x = 1,571.85

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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.