Home / 2,191.46-3,286.13-803.79

Finding the Fourth Proportional to 2,191.46, 3,286.13 and 803.79

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Solution

The fourth proportional to 2,191.46, 3,286.13 and 803.79 is: 1,205.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.46 : 3,286.13 = 803.79 : x
  2. Step 2: Convert to fraction form
    2,191.46/3,286.13 = 803.79/x
  3. Step 3: Cross multiply
    2,191.46x = 3,286.13 × 803.79
  4. Step 4: Simplify right side
    2,191.46x = 2,641,354.41
  5. Step 5: Solve for x
    x = 2,641,354.41/2,191.46
  6. Step 6: Final answer
    x = 1,205.30

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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.