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Finding the Fourth Proportional to 11,671.02, 17,506.26 and 3,879.90

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Solution

The fourth proportional to 11,671.02, 17,506.26 and 3,879.90 is: 5,819.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,671.02 : 17,506.26 = 3,879.90 : x
  2. Step 2: Convert to fraction form
    11,671.02/17,506.26 = 3,879.90/x
  3. Step 3: Cross multiply
    11,671.02x = 17,506.26 × 3,879.90
  4. Step 4: Simplify right side
    11,671.02x = 67,922,538.17
  5. Step 5: Solve for x
    x = 67,922,538.17/11,671.02
  6. Step 6: Final answer
    x = 5,819.76

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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.