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Finding the Fourth Proportional to 2,758, 4,137 and 1,199.56

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Solution

The fourth proportional to 2,758, 4,137 and 1,199.56 is: 1,799.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758 : 4,137 = 1,199.56 : x
  2. Step 2: Convert to fraction form
    2,758/4,137 = 1,199.56/x
  3. Step 3: Cross multiply
    2,758x = 4,137 × 1,199.56
  4. Step 4: Simplify right side
    2,758x = 4,962,579.72
  5. Step 5: Solve for x
    x = 4,962,579.72/2,758
  6. Step 6: Final answer
    x = 1,799.34

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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.