Home / 5,408.42-8,112.61-2,119.19

Finding the Fourth Proportional to 5,408.42, 8,112.61 and 2,119.19

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Solution

The fourth proportional to 5,408.42, 8,112.61 and 2,119.19 is: 3,178.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.42 : 8,112.61 = 2,119.19 : x
  2. Step 2: Convert to fraction form
    5,408.42/8,112.61 = 2,119.19/x
  3. Step 3: Cross multiply
    5,408.42x = 8,112.61 × 2,119.19
  4. Step 4: Simplify right side
    5,408.42x = 17,192,151.39
  5. Step 5: Solve for x
    x = 17,192,151.39/5,408.42
  6. Step 6: Final answer
    x = 3,178.78

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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.