Home / 1,912.62-2,868.06-680.01

Finding the Fourth Proportional to 1,912.62, 2,868.06 and 680.01

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Solution

The fourth proportional to 1,912.62, 2,868.06 and 680.01 is: 1,019.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.62 : 2,868.06 = 680.01 : x
  2. Step 2: Convert to fraction form
    1,912.62/2,868.06 = 680.01/x
  3. Step 3: Cross multiply
    1,912.62x = 2,868.06 × 680.01
  4. Step 4: Simplify right side
    1,912.62x = 1,950,309.48
  5. Step 5: Solve for x
    x = 1,950,309.48/1,912.62
  6. Step 6: Final answer
    x = 1,019.71

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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.