Home / 3,919.22-5,408.63-2,150.85

Finding the Fourth Proportional to 3,919.22, 5,408.63 and 2,150.85

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Solution

The fourth proportional to 3,919.22, 5,408.63 and 2,150.85 is: 2,968.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.22 : 5,408.63 = 2,150.85 : x
  2. Step 2: Convert to fraction form
    3,919.22/5,408.63 = 2,150.85/x
  3. Step 3: Cross multiply
    3,919.22x = 5,408.63 × 2,150.85
  4. Step 4: Simplify right side
    3,919.22x = 11,633,151.84
  5. Step 5: Solve for x
    x = 11,633,151.84/3,919.22
  6. Step 6: Final answer
    x = 2,968.23

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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.