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Finding the Fourth Proportional to 3,082.48, 4,255.86 and 1,905.28

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Solution

The fourth proportional to 3,082.48, 4,255.86 and 1,905.28 is: 2,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082.48 : 4,255.86 = 1,905.28 : x
  2. Step 2: Convert to fraction form
    3,082.48/4,255.86 = 1,905.28/x
  3. Step 3: Cross multiply
    3,082.48x = 4,255.86 × 1,905.28
  4. Step 4: Simplify right side
    3,082.48x = 8,108,604.94
  5. Step 5: Solve for x
    x = 8,108,604.94/3,082.48
  6. Step 6: Final answer
    x = 2,630.55

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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.