Home / 3,198.60-4,787.10-2,809.80

Finding the Fourth Proportional to 3,198.60, 4,787.10 and 2,809.80

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Solution

The fourth proportional to 3,198.60, 4,787.10 and 2,809.80 is: 4,205.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.60 : 4,787.10 = 2,809.80 : x
  2. Step 2: Convert to fraction form
    3,198.60/4,787.10 = 2,809.80/x
  3. Step 3: Cross multiply
    3,198.60x = 4,787.10 × 2,809.80
  4. Step 4: Simplify right side
    3,198.60x = 13,450,793.58
  5. Step 5: Solve for x
    x = 13,450,793.58/3,198.60
  6. Step 6: Final answer
    x = 4,205.21

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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.