Home / 2,974.62-4,106.86-1,912.88

Finding the Fourth Proportional to 2,974.62, 4,106.86 and 1,912.88

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Solution

The fourth proportional to 2,974.62, 4,106.86 and 1,912.88 is: 2,640.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.62 : 4,106.86 = 1,912.88 : x
  2. Step 2: Convert to fraction form
    2,974.62/4,106.86 = 1,912.88/x
  3. Step 3: Cross multiply
    2,974.62x = 4,106.86 × 1,912.88
  4. Step 4: Simplify right side
    2,974.62x = 7,855,930.36
  5. Step 5: Solve for x
    x = 7,855,930.36/2,974.62
  6. Step 6: Final answer
    x = 2,640.99

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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.