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Finding the Fourth Proportional to 3,879.77, 5,352.42 and 3,037.09

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Solution

The fourth proportional to 3,879.77, 5,352.42 and 3,037.09 is: 4,189.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.77 : 5,352.42 = 3,037.09 : x
  2. Step 2: Convert to fraction form
    3,879.77/5,352.42 = 3,037.09/x
  3. Step 3: Cross multiply
    3,879.77x = 5,352.42 × 3,037.09
  4. Step 4: Simplify right side
    3,879.77x = 16,255,766.07
  5. Step 5: Solve for x
    x = 16,255,766.07/3,879.77
  6. Step 6: Final answer
    x = 4,189.88

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1.5x scale

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.