Home / 2,808.38-4,215.82-1,512.38

Finding the Fourth Proportional to 2,808.38, 4,215.82 and 1,512.38

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Solution

The fourth proportional to 2,808.38, 4,215.82 and 1,512.38 is: 2,270.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.38 : 4,215.82 = 1,512.38 : x
  2. Step 2: Convert to fraction form
    2,808.38/4,215.82 = 1,512.38/x
  3. Step 3: Cross multiply
    2,808.38x = 4,215.82 × 1,512.38
  4. Step 4: Simplify right side
    2,808.38x = 6,375,921.85
  5. Step 5: Solve for x
    x = 6,375,921.85/2,808.38
  6. Step 6: Final answer
    x = 2,270.32

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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.