Home / 5,408.45-8,115.11-2,939.57

Finding the Fourth Proportional to 5,408.45, 8,115.11 and 2,939.57

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Solution

The fourth proportional to 5,408.45, 8,115.11 and 2,939.57 is: 4,410.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.45 : 8,115.11 = 2,939.57 : x
  2. Step 2: Convert to fraction form
    5,408.45/8,115.11 = 2,939.57/x
  3. Step 3: Cross multiply
    5,408.45x = 8,115.11 × 2,939.57
  4. Step 4: Simplify right side
    5,408.45x = 23,854,878.63
  5. Step 5: Solve for x
    x = 23,854,878.63/5,408.45
  6. Step 6: Final answer
    x = 4,410.67

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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.