Home / 5,520.25-8,278.35-1,821.39

Finding the Fourth Proportional to 5,520.25, 8,278.35 and 1,821.39

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Solution

The fourth proportional to 5,520.25, 8,278.35 and 1,821.39 is: 2,731.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.25 : 8,278.35 = 1,821.39 : x
  2. Step 2: Convert to fraction form
    5,520.25/8,278.35 = 1,821.39/x
  3. Step 3: Cross multiply
    5,520.25x = 8,278.35 × 1,821.39
  4. Step 4: Simplify right side
    5,520.25x = 15,078,103.91
  5. Step 5: Solve for x
    x = 15,078,103.91/5,520.25
  6. Step 6: Final answer
    x = 2,731.42

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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.