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Finding the Fourth Proportional to 3,268.78, 4,891.80 and 2,676.94

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Solution

The fourth proportional to 3,268.78, 4,891.80 and 2,676.94 is: 4,006.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,268.78 : 4,891.80 = 2,676.94 : x
  2. Step 2: Convert to fraction form
    3,268.78/4,891.80 = 2,676.94/x
  3. Step 3: Cross multiply
    3,268.78x = 4,891.80 × 2,676.94
  4. Step 4: Simplify right side
    3,268.78x = 13,095,055.09
  5. Step 5: Solve for x
    x = 13,095,055.09/3,268.78
  6. Step 6: Final answer
    x = 4,006.10

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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.