Home / 3,190.32-4,404.20-2,129.84

Finding the Fourth Proportional to 3,190.32, 4,404.20 and 2,129.84

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Solution

The fourth proportional to 3,190.32, 4,404.20 and 2,129.84 is: 2,940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.32 : 4,404.20 = 2,129.84 : x
  2. Step 2: Convert to fraction form
    3,190.32/4,404.20 = 2,129.84/x
  3. Step 3: Cross multiply
    3,190.32x = 4,404.20 × 2,129.84
  4. Step 4: Simplify right side
    3,190.32x = 9,380,241.33
  5. Step 5: Solve for x
    x = 9,380,241.33/3,190.32
  6. Step 6: Final answer
    x = 2,940.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.