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Finding the Fourth Proportional to 2,660.91, 3,994.89 and 2,273.40

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Solution

The fourth proportional to 2,660.91, 3,994.89 and 2,273.40 is: 3,413.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.91 : 3,994.89 = 2,273.40 : x
  2. Step 2: Convert to fraction form
    2,660.91/3,994.89 = 2,273.40/x
  3. Step 3: Cross multiply
    2,660.91x = 3,994.89 × 2,273.40
  4. Step 4: Simplify right side
    2,660.91x = 9,081,972.21
  5. Step 5: Solve for x
    x = 9,081,972.21/2,660.91
  6. Step 6: Final answer
    x = 3,413.11

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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.