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Finding the Fourth Proportional to 1,982.70, 2,974.59 and 941.85

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Solution

The fourth proportional to 1,982.70, 2,974.59 and 941.85 is: 1,413.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.70 : 2,974.59 = 941.85 : x
  2. Step 2: Convert to fraction form
    1,982.70/2,974.59 = 941.85/x
  3. Step 3: Cross multiply
    1,982.70x = 2,974.59 × 941.85
  4. Step 4: Simplify right side
    1,982.70x = 2,801,617.59
  5. Step 5: Solve for x
    x = 2,801,617.59/1,982.70
  6. Step 6: Final answer
    x = 1,413.03

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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.