Home / 2,108.44-3,163.39-939.26

Finding the Fourth Proportional to 2,108.44, 3,163.39 and 939.26

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Solution

The fourth proportional to 2,108.44, 3,163.39 and 939.26 is: 1,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.44 : 3,163.39 = 939.26 : x
  2. Step 2: Convert to fraction form
    2,108.44/3,163.39 = 939.26/x
  3. Step 3: Cross multiply
    2,108.44x = 3,163.39 × 939.26
  4. Step 4: Simplify right side
    2,108.44x = 2,971,251.25
  5. Step 5: Solve for x
    x = 2,971,251.25/2,108.44
  6. Step 6: Final answer
    x = 1,409.22

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1.5x scale

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.