Home / 2,108.50-3,163.48-939.33

Finding the Fourth Proportional to 2,108.50, 3,163.48 and 939.33

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Solution

The fourth proportional to 2,108.50, 3,163.48 and 939.33 is: 1,409.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.50 : 3,163.48 = 939.33 : x
  2. Step 2: Convert to fraction form
    2,108.50/3,163.48 = 939.33/x
  3. Step 3: Cross multiply
    2,108.50x = 3,163.48 × 939.33
  4. Step 4: Simplify right side
    2,108.50x = 2,971,539.06
  5. Step 5: Solve for x
    x = 2,971,539.06/2,108.50
  6. Step 6: Final answer
    x = 1,409.32

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Double scale
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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.