Home / 3,515.26-5,270.44-2,128.94

Finding the Fourth Proportional to 3,515.26, 5,270.44 and 2,128.94

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Solution

The fourth proportional to 3,515.26, 5,270.44 and 2,128.94 is: 3,191.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.26 : 5,270.44 = 2,128.94 : x
  2. Step 2: Convert to fraction form
    3,515.26/5,270.44 = 2,128.94/x
  3. Step 3: Cross multiply
    3,515.26x = 5,270.44 × 2,128.94
  4. Step 4: Simplify right side
    3,515.26x = 11,220,450.53
  5. Step 5: Solve for x
    x = 11,220,450.53/3,515.26
  6. Step 6: Final answer
    x = 3,191.93

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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.