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Finding the Fourth Proportional to 2,757.64, 4,132.60 and 2,138.44

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Solution

The fourth proportional to 2,757.64, 4,132.60 and 2,138.44 is: 3,204.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.64 : 4,132.60 = 2,138.44 : x
  2. Step 2: Convert to fraction form
    2,757.64/4,132.60 = 2,138.44/x
  3. Step 3: Cross multiply
    2,757.64x = 4,132.60 × 2,138.44
  4. Step 4: Simplify right side
    2,757.64x = 8,837,317.14
  5. Step 5: Solve for x
    x = 8,837,317.14/2,757.64
  6. Step 6: Final answer
    x = 3,204.67

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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.