Home / 2,191.12-3,286.68-730.28

Finding the Fourth Proportional to 2,191.12, 3,286.68 and 730.28

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Solution

The fourth proportional to 2,191.12, 3,286.68 and 730.28 is: 1,095.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.12 : 3,286.68 = 730.28 : x
  2. Step 2: Convert to fraction form
    2,191.12/3,286.68 = 730.28/x
  3. Step 3: Cross multiply
    2,191.12x = 3,286.68 × 730.28
  4. Step 4: Simplify right side
    2,191.12x = 2,400,196.67
  5. Step 5: Solve for x
    x = 2,400,196.67/2,191.12
  6. Step 6: Final answer
    x = 1,095.42

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Similar ratio
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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.