Home / 5,138.26-7,707.21-2,175.90

Finding the Fourth Proportional to 5,138.26, 7,707.21 and 2,175.90

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Solution

The fourth proportional to 5,138.26, 7,707.21 and 2,175.90 is: 3,263.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.26 : 7,707.21 = 2,175.90 : x
  2. Step 2: Convert to fraction form
    5,138.26/7,707.21 = 2,175.90/x
  3. Step 3: Cross multiply
    5,138.26x = 7,707.21 × 2,175.90
  4. Step 4: Simplify right side
    5,138.26x = 16,770,118.24
  5. Step 5: Solve for x
    x = 16,770,118.24/5,138.26
  6. Step 6: Final answer
    x = 3,263.77

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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.