Home / 3,190.80-4,787.82-1,876.44

Finding the Fourth Proportional to 3,190.80, 4,787.82 and 1,876.44

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Solution

The fourth proportional to 3,190.80, 4,787.82 and 1,876.44 is: 2,815.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.80 : 4,787.82 = 1,876.44 : x
  2. Step 2: Convert to fraction form
    3,190.80/4,787.82 = 1,876.44/x
  3. Step 3: Cross multiply
    3,190.80x = 4,787.82 × 1,876.44
  4. Step 4: Simplify right side
    3,190.80x = 8,984,056.96
  5. Step 5: Solve for x
    x = 8,984,056.96/3,190.80
  6. Step 6: Final answer
    x = 2,815.61

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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.