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Finding the Fourth Proportional to 11,978.73, 17,968.77 and 3,660.03

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Solution

The fourth proportional to 11,978.73, 17,968.77 and 3,660.03 is: 5,490.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978.73 : 17,968.77 = 3,660.03 : x
  2. Step 2: Convert to fraction form
    11,978.73/17,968.77 = 3,660.03/x
  3. Step 3: Cross multiply
    11,978.73x = 17,968.77 × 3,660.03
  4. Step 4: Simplify right side
    11,978.73x = 65,766,237.26
  5. Step 5: Solve for x
    x = 65,766,237.26/11,978.73
  6. Step 6: Final answer
    x = 5,490.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.