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Finding the Fourth Proportional to 2,855.88, 4,278.28 and 1,879.04

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Solution

The fourth proportional to 2,855.88, 4,278.28 and 1,879.04 is: 2,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.88 : 4,278.28 = 1,879.04 : x
  2. Step 2: Convert to fraction form
    2,855.88/4,278.28 = 1,879.04/x
  3. Step 3: Cross multiply
    2,855.88x = 4,278.28 × 1,879.04
  4. Step 4: Simplify right side
    2,855.88x = 8,039,059.25
  5. Step 5: Solve for x
    x = 8,039,059.25/2,855.88
  6. Step 6: Final answer
    x = 2,814.91

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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.