Home / 3,919.13-5,408.39-2,150.84

Finding the Fourth Proportional to 3,919.13, 5,408.39 and 2,150.84

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Solution

The fourth proportional to 3,919.13, 5,408.39 and 2,150.84 is: 2,968.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.13 : 5,408.39 = 2,150.84 : x
  2. Step 2: Convert to fraction form
    3,919.13/5,408.39 = 2,150.84/x
  3. Step 3: Cross multiply
    3,919.13x = 5,408.39 × 2,150.84
  4. Step 4: Simplify right side
    3,919.13x = 11,632,600.45
  5. Step 5: Solve for x
    x = 11,632,600.45/3,919.13
  6. Step 6: Final answer
    x = 2,968.16

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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.