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Finding the Fourth Proportional to 5,179.22, 7,766.94 and 1,891.34

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Solution

The fourth proportional to 5,179.22, 7,766.94 and 1,891.34 is: 2,836.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.22 : 7,766.94 = 1,891.34 : x
  2. Step 2: Convert to fraction form
    5,179.22/7,766.94 = 1,891.34/x
  3. Step 3: Cross multiply
    5,179.22x = 7,766.94 × 1,891.34
  4. Step 4: Simplify right side
    5,179.22x = 14,689,924.30
  5. Step 5: Solve for x
    x = 14,689,924.30/5,179.22
  6. Step 6: Final answer
    x = 2,836.32

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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.