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Finding the Fourth Proportional to 3,642.92, 5,022.12 and 3,081.12

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Solution

The fourth proportional to 3,642.92, 5,022.12 and 3,081.12 is: 4,247.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642.92 : 5,022.12 = 3,081.12 : x
  2. Step 2: Convert to fraction form
    3,642.92/5,022.12 = 3,081.12/x
  3. Step 3: Cross multiply
    3,642.92x = 5,022.12 × 3,081.12
  4. Step 4: Simplify right side
    3,642.92x = 15,473,754.37
  5. Step 5: Solve for x
    x = 15,473,754.37/3,642.92
  6. Step 6: Final answer
    x = 4,247.62

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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.