Home / 5,138.26-7,690.70-2,669.56

Finding the Fourth Proportional to 5,138.26, 7,690.70 and 2,669.56

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Solution

The fourth proportional to 5,138.26, 7,690.70 and 2,669.56 is: 3,995.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.26 : 7,690.70 = 2,669.56 : x
  2. Step 2: Convert to fraction form
    5,138.26/7,690.70 = 2,669.56/x
  3. Step 3: Cross multiply
    5,138.26x = 7,690.70 × 2,669.56
  4. Step 4: Simplify right side
    5,138.26x = 20,530,785.09
  5. Step 5: Solve for x
    x = 20,530,785.09/5,138.26
  6. Step 6: Final answer
    x = 3,995.67

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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.