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Finding the Fourth Proportional to 7,181.70, 10,768.14 and 2,794.05

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Solution

The fourth proportional to 7,181.70, 10,768.14 and 2,794.05 is: 4,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.70 : 10,768.14 = 2,794.05 : x
  2. Step 2: Convert to fraction form
    7,181.70/10,768.14 = 2,794.05/x
  3. Step 3: Cross multiply
    7,181.70x = 10,768.14 × 2,794.05
  4. Step 4: Simplify right side
    7,181.70x = 30,086,721.57
  5. Step 5: Solve for x
    x = 30,086,721.57/7,181.70
  6. Step 6: Final answer
    x = 4,189.36

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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.