Home / 3,115.05-4,299.16-1,788.73

Finding the Fourth Proportional to 3,115.05, 4,299.16 and 1,788.73

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Solution

The fourth proportional to 3,115.05, 4,299.16 and 1,788.73 is: 2,468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.05 : 4,299.16 = 1,788.73 : x
  2. Step 2: Convert to fraction form
    3,115.05/4,299.16 = 1,788.73/x
  3. Step 3: Cross multiply
    3,115.05x = 4,299.16 × 1,788.73
  4. Step 4: Simplify right side
    3,115.05x = 7,690,014.97
  5. Step 5: Solve for x
    x = 7,690,014.97/3,115.05
  6. Step 6: Final answer
    x = 2,468.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.