Home / 7,715.85-11,573.78-2,788.96

Finding the Fourth Proportional to 7,715.85, 11,573.78 and 2,788.96

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Solution

The fourth proportional to 7,715.85, 11,573.78 and 2,788.96 is: 4,183.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.85 : 11,573.78 = 2,788.96 : x
  2. Step 2: Convert to fraction form
    7,715.85/11,573.78 = 2,788.96/x
  3. Step 3: Cross multiply
    7,715.85x = 11,573.78 × 2,788.96
  4. Step 4: Simplify right side
    7,715.85x = 32,278,809.47
  5. Step 5: Solve for x
    x = 32,278,809.47/7,715.85
  6. Step 6: Final answer
    x = 4,183.44

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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.