Home / 7,821.82-11,734.11-2,555.86

Finding the Fourth Proportional to 7,821.82, 11,734.11 and 2,555.86

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Solution

The fourth proportional to 7,821.82, 11,734.11 and 2,555.86 is: 3,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.82 : 11,734.11 = 2,555.86 : x
  2. Step 2: Convert to fraction form
    7,821.82/11,734.11 = 2,555.86/x
  3. Step 3: Cross multiply
    7,821.82x = 11,734.11 × 2,555.86
  4. Step 4: Simplify right side
    7,821.82x = 29,990,742.38
  5. Step 5: Solve for x
    x = 29,990,742.38/7,821.82
  6. Step 6: Final answer
    x = 3,834.24

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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.