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Finding the Fourth Proportional to 2,195.79, 3,293.97 and 808.86

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Solution

The fourth proportional to 2,195.79, 3,293.97 and 808.86 is: 1,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.79 : 3,293.97 = 808.86 : x
  2. Step 2: Convert to fraction form
    2,195.79/3,293.97 = 808.86/x
  3. Step 3: Cross multiply
    2,195.79x = 3,293.97 × 808.86
  4. Step 4: Simplify right side
    2,195.79x = 2,664,360.57
  5. Step 5: Solve for x
    x = 2,664,360.57/2,195.79
  6. Step 6: Final answer
    x = 1,213.39

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1.5x scale

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.