Home / 3,974.75-5,486.70-2,982.90

Finding the Fourth Proportional to 3,974.75, 5,486.70 and 2,982.90

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Solution

The fourth proportional to 3,974.75, 5,486.70 and 2,982.90 is: 4,117.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.75 : 5,486.70 = 2,982.90 : x
  2. Step 2: Convert to fraction form
    3,974.75/5,486.70 = 2,982.90/x
  3. Step 3: Cross multiply
    3,974.75x = 5,486.70 × 2,982.90
  4. Step 4: Simplify right side
    3,974.75x = 16,366,262.52
  5. Step 5: Solve for x
    x = 16,366,262.52/3,974.75
  6. Step 6: Final answer
    x = 4,117.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.