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Finding the Fourth Proportional to 2,559.87, 3,821.11 and 2,196.99

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Solution

The fourth proportional to 2,559.87, 3,821.11 and 2,196.99 is: 3,279.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,559.87 : 3,821.11 = 2,196.99 : x
  2. Step 2: Convert to fraction form
    2,559.87/3,821.11 = 2,196.99/x
  3. Step 3: Cross multiply
    2,559.87x = 3,821.11 × 2,196.99
  4. Step 4: Simplify right side
    2,559.87x = 8,394,934.97
  5. Step 5: Solve for x
    x = 8,394,934.97/2,559.87
  6. Step 6: Final answer
    x = 3,279.44

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.