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Finding the Fourth Proportional to 3,785.94, 5,679.44 and 1,012.71

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Solution

The fourth proportional to 3,785.94, 5,679.44 and 1,012.71 is: 1,519.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.94 : 5,679.44 = 1,012.71 : x
  2. Step 2: Convert to fraction form
    3,785.94/5,679.44 = 1,012.71/x
  3. Step 3: Cross multiply
    3,785.94x = 5,679.44 × 1,012.71
  4. Step 4: Simplify right side
    3,785.94x = 5,751,620.62
  5. Step 5: Solve for x
    x = 5,751,620.62/3,785.94
  6. Step 6: Final answer
    x = 1,519.21

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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.