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Finding the Fourth Proportional to 2,722.12, 4,082.50 and 774.34

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Solution

The fourth proportional to 2,722.12, 4,082.50 and 774.34 is: 1,161.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.12 : 4,082.50 = 774.34 : x
  2. Step 2: Convert to fraction form
    2,722.12/4,082.50 = 774.34/x
  3. Step 3: Cross multiply
    2,722.12x = 4,082.50 × 774.34
  4. Step 4: Simplify right side
    2,722.12x = 3,161,243.05
  5. Step 5: Solve for x
    x = 3,161,243.05/2,722.12
  6. Step 6: Final answer
    x = 1,161.32

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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.