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Finding the Fourth Proportional to 2,704.08, 4,055.28 and 855.64

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Solution

The fourth proportional to 2,704.08, 4,055.28 and 855.64 is: 1,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,704.08 : 4,055.28 = 855.64 : x
  2. Step 2: Convert to fraction form
    2,704.08/4,055.28 = 855.64/x
  3. Step 3: Cross multiply
    2,704.08x = 4,055.28 × 855.64
  4. Step 4: Simplify right side
    2,704.08x = 3,469,859.78
  5. Step 5: Solve for x
    x = 3,469,859.78/2,704.08
  6. Step 6: Final answer
    x = 1,283.19

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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.