Home / 3,408.60-5,115.78-2,311.32

Finding the Fourth Proportional to 3,408.60, 5,115.78 and 2,311.32

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Solution

The fourth proportional to 3,408.60, 5,115.78 and 2,311.32 is: 3,468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.60 : 5,115.78 = 2,311.32 : x
  2. Step 2: Convert to fraction form
    3,408.60/5,115.78 = 2,311.32/x
  3. Step 3: Cross multiply
    3,408.60x = 5,115.78 × 2,311.32
  4. Step 4: Simplify right side
    3,408.60x = 11,824,204.63
  5. Step 5: Solve for x
    x = 11,824,204.63/3,408.60
  6. Step 6: Final answer
    x = 3,468.93

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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.