Home / 3,181.32-4,375.35-2,787.66

Finding the Fourth Proportional to 3,181.32, 4,375.35 and 2,787.66

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Solution

The fourth proportional to 3,181.32, 4,375.35 and 2,787.66 is: 3,833.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.32 : 4,375.35 = 2,787.66 : x
  2. Step 2: Convert to fraction form
    3,181.32/4,375.35 = 2,787.66/x
  3. Step 3: Cross multiply
    3,181.32x = 4,375.35 × 2,787.66
  4. Step 4: Simplify right side
    3,181.32x = 12,196,988.18
  5. Step 5: Solve for x
    x = 12,196,988.18/3,181.32
  6. Step 6: Final answer
    x = 3,833.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.