Home / 8,170.21-12,249.34-2,620.39

Finding the Fourth Proportional to 8,170.21, 12,249.34 and 2,620.39

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Solution

The fourth proportional to 8,170.21, 12,249.34 and 2,620.39 is: 3,928.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,170.21 : 12,249.34 = 2,620.39 : x
  2. Step 2: Convert to fraction form
    8,170.21/12,249.34 = 2,620.39/x
  3. Step 3: Cross multiply
    8,170.21x = 12,249.34 × 2,620.39
  4. Step 4: Simplify right side
    8,170.21x = 32,098,072.11
  5. Step 5: Solve for x
    x = 32,098,072.11/8,170.21
  6. Step 6: Final answer
    x = 3,928.67

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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.