Home / 2,628.06-3,942.20-680.27

Finding the Fourth Proportional to 2,628.06, 3,942.20 and 680.27

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Solution

The fourth proportional to 2,628.06, 3,942.20 and 680.27 is: 1,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.06 : 3,942.20 = 680.27 : x
  2. Step 2: Convert to fraction form
    2,628.06/3,942.20 = 680.27/x
  3. Step 3: Cross multiply
    2,628.06x = 3,942.20 × 680.27
  4. Step 4: Simplify right side
    2,628.06x = 2,681,737.28
  5. Step 5: Solve for x
    x = 2,681,737.28/2,628.06
  6. Step 6: Final answer
    x = 1,020.42

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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.