Home / 3,198.65-4,787.01-2,921.31

Finding the Fourth Proportional to 3,198.65, 4,787.01 and 2,921.31

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Solution

The fourth proportional to 3,198.65, 4,787.01 and 2,921.31 is: 4,371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.65 : 4,787.01 = 2,921.31 : x
  2. Step 2: Convert to fraction form
    3,198.65/4,787.01 = 2,921.31/x
  3. Step 3: Cross multiply
    3,198.65x = 4,787.01 × 2,921.31
  4. Step 4: Simplify right side
    3,198.65x = 13,984,340.18
  5. Step 5: Solve for x
    x = 13,984,340.18/3,198.65
  6. Step 6: Final answer
    x = 4,371.96

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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.