Home / 3,828.15-5,731.41-3,121.17

Finding the Fourth Proportional to 3,828.15, 5,731.41 and 3,121.17

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Solution

The fourth proportional to 3,828.15, 5,731.41 and 3,121.17 is: 4,672.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.15 : 5,731.41 = 3,121.17 : x
  2. Step 2: Convert to fraction form
    3,828.15/5,731.41 = 3,121.17/x
  3. Step 3: Cross multiply
    3,828.15x = 5,731.41 × 3,121.17
  4. Step 4: Simplify right side
    3,828.15x = 17,888,704.95
  5. Step 5: Solve for x
    x = 17,888,704.95/3,828.15
  6. Step 6: Final answer
    x = 4,672.94

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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.