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Finding the Fourth Proportional to 2,191.27, 3,286.91 and 730.42

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Solution

The fourth proportional to 2,191.27, 3,286.91 and 730.42 is: 1,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.27 : 3,286.91 = 730.42 : x
  2. Step 2: Convert to fraction form
    2,191.27/3,286.91 = 730.42/x
  3. Step 3: Cross multiply
    2,191.27x = 3,286.91 × 730.42
  4. Step 4: Simplify right side
    2,191.27x = 2,400,835.36
  5. Step 5: Solve for x
    x = 2,400,835.36/2,191.27
  6. Step 6: Final answer
    x = 1,095.64

Related Problems

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Double scale
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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.