Home / 2,195.50-3,294.55-809.81

Finding the Fourth Proportional to 2,195.50, 3,294.55 and 809.81

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Solution

The fourth proportional to 2,195.50, 3,294.55 and 809.81 is: 1,215.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.50 : 3,294.55 = 809.81 : x
  2. Step 2: Convert to fraction form
    2,195.50/3,294.55 = 809.81/x
  3. Step 3: Cross multiply
    2,195.50x = 3,294.55 × 809.81
  4. Step 4: Simplify right side
    2,195.50x = 2,667,939.01
  5. Step 5: Solve for x
    x = 2,667,939.01/2,195.50
  6. Step 6: Final answer
    x = 1,215.19

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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.