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Finding the Fourth Proportional to 2,091.67, 3,137.91 and 794.05

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Solution

The fourth proportional to 2,091.67, 3,137.91 and 794.05 is: 1,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.67 : 3,137.91 = 794.05 : x
  2. Step 2: Convert to fraction form
    2,091.67/3,137.91 = 794.05/x
  3. Step 3: Cross multiply
    2,091.67x = 3,137.91 × 794.05
  4. Step 4: Simplify right side
    2,091.67x = 2,491,637.78
  5. Step 5: Solve for x
    x = 2,491,637.78/2,091.67
  6. Step 6: Final answer
    x = 1,191.22

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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.