Home / 2,608.38-3,912.66-1,309.14

Finding the Fourth Proportional to 2,608.38, 3,912.66 and 1,309.14

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Solution

The fourth proportional to 2,608.38, 3,912.66 and 1,309.14 is: 1,963.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608.38 : 3,912.66 = 1,309.14 : x
  2. Step 2: Convert to fraction form
    2,608.38/3,912.66 = 1,309.14/x
  3. Step 3: Cross multiply
    2,608.38x = 3,912.66 × 1,309.14
  4. Step 4: Simplify right side
    2,608.38x = 5,122,219.71
  5. Step 5: Solve for x
    x = 5,122,219.71/2,608.38
  6. Step 6: Final answer
    x = 1,963.76

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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.