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Finding the Fourth Proportional to 3,082.78, 4,255.03 and 1,903.17

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Solution

The fourth proportional to 3,082.78, 4,255.03 and 1,903.17 is: 2,626.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082.78 : 4,255.03 = 1,903.17 : x
  2. Step 2: Convert to fraction form
    3,082.78/4,255.03 = 1,903.17/x
  3. Step 3: Cross multiply
    3,082.78x = 4,255.03 × 1,903.17
  4. Step 4: Simplify right side
    3,082.78x = 8,098,045.45
  5. Step 5: Solve for x
    x = 8,098,045.45/3,082.78
  6. Step 6: Final answer
    x = 2,626.86

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