Home / 3,031.38-4,181.22-2,179.92

Finding the Fourth Proportional to 3,031.38, 4,181.22 and 2,179.92

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Solution

The fourth proportional to 3,031.38, 4,181.22 and 2,179.92 is: 3,006.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.38 : 4,181.22 = 2,179.92 : x
  2. Step 2: Convert to fraction form
    3,031.38/4,181.22 = 2,179.92/x
  3. Step 3: Cross multiply
    3,031.38x = 4,181.22 × 2,179.92
  4. Step 4: Simplify right side
    3,031.38x = 9,114,725.10
  5. Step 5: Solve for x
    x = 9,114,725.10/3,031.38
  6. Step 6: Final answer
    x = 3,006.79

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1.5x scale

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.