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Finding the Fourth Proportional to 2,195.91, 3,293.91 and 809.37

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Solution

The fourth proportional to 2,195.91, 3,293.91 and 809.37 is: 1,214.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.91 : 3,293.91 = 809.37 : x
  2. Step 2: Convert to fraction form
    2,195.91/3,293.91 = 809.37/x
  3. Step 3: Cross multiply
    2,195.91x = 3,293.91 × 809.37
  4. Step 4: Simplify right side
    2,195.91x = 2,665,991.94
  5. Step 5: Solve for x
    x = 2,665,991.94/2,195.91
  6. Step 6: Final answer
    x = 1,214.07

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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.