Home / 7,481.21-11,212.02-5,408.15

Finding the Fourth Proportional to 7,481.21, 11,212.02 and 5,408.15

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Solution

The fourth proportional to 7,481.21, 11,212.02 and 5,408.15 is: 8,105.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.21 : 11,212.02 = 5,408.15 : x
  2. Step 2: Convert to fraction form
    7,481.21/11,212.02 = 5,408.15/x
  3. Step 3: Cross multiply
    7,481.21x = 11,212.02 × 5,408.15
  4. Step 4: Simplify right side
    7,481.21x = 60,636,229.90
  5. Step 5: Solve for x
    x = 60,636,229.90/7,481.21
  6. Step 6: Final answer
    x = 8,105.14

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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.