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Finding the Fourth Proportional to 3,475.44, 5,215.18 and 2,091.44

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Solution

The fourth proportional to 3,475.44, 5,215.18 and 2,091.44 is: 3,138.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,475.44 : 5,215.18 = 2,091.44 : x
  2. Step 2: Convert to fraction form
    3,475.44/5,215.18 = 2,091.44/x
  3. Step 3: Cross multiply
    3,475.44x = 5,215.18 × 2,091.44
  4. Step 4: Simplify right side
    3,475.44x = 10,907,236.06
  5. Step 5: Solve for x
    x = 10,907,236.06/3,475.44
  6. Step 6: Final answer
    x = 3,138.38

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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.