Home / 2,628.06-3,942.05-680.19

Finding the Fourth Proportional to 2,628.06, 3,942.05 and 680.19

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Solution

The fourth proportional to 2,628.06, 3,942.05 and 680.19 is: 1,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.06 : 3,942.05 = 680.19 : x
  2. Step 2: Convert to fraction form
    2,628.06/3,942.05 = 680.19/x
  3. Step 3: Cross multiply
    2,628.06x = 3,942.05 × 680.19
  4. Step 4: Simplify right side
    2,628.06x = 2,681,339.59
  5. Step 5: Solve for x
    x = 2,681,339.59/2,628.06
  6. Step 6: Final answer
    x = 1,020.27

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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.