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Finding the Fourth Proportional to 11,773.67, 17,662.21 and 3,979.85

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Solution

The fourth proportional to 11,773.67, 17,662.21 and 3,979.85 is: 5,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,773.67 : 17,662.21 = 3,979.85 : x
  2. Step 2: Convert to fraction form
    11,773.67/17,662.21 = 3,979.85/x
  3. Step 3: Cross multiply
    11,773.67x = 17,662.21 × 3,979.85
  4. Step 4: Simplify right side
    11,773.67x = 70,292,848.21
  5. Step 5: Solve for x
    x = 70,292,848.21/11,773.67
  6. Step 6: Final answer
    x = 5,970.35

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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.