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Finding the Fourth Proportional to 2,196.86, 3,295.27 and 809.60

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Solution

The fourth proportional to 2,196.86, 3,295.27 and 809.60 is: 1,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,196.86 : 3,295.27 = 809.60 : x
  2. Step 2: Convert to fraction form
    2,196.86/3,295.27 = 809.60/x
  3. Step 3: Cross multiply
    2,196.86x = 3,295.27 × 809.60
  4. Step 4: Simplify right side
    2,196.86x = 2,667,832.09
  5. Step 5: Solve for x
    x = 2,667,832.09/2,196.86
  6. Step 6: Final answer
    x = 1,214.39

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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.