Home / 3,195.21-4,408.09-2,015.59

Finding the Fourth Proportional to 3,195.21, 4,408.09 and 2,015.59

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Solution

The fourth proportional to 3,195.21, 4,408.09 and 2,015.59 is: 2,780.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,195.21 : 4,408.09 = 2,015.59 : x
  2. Step 2: Convert to fraction form
    3,195.21/4,408.09 = 2,015.59/x
  3. Step 3: Cross multiply
    3,195.21x = 4,408.09 × 2,015.59
  4. Step 4: Simplify right side
    3,195.21x = 8,884,902.12
  5. Step 5: Solve for x
    x = 8,884,902.12/3,195.21
  6. Step 6: Final answer
    x = 2,780.69

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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.