Home / 8,115.44-12,171.30-2,272.64

Finding the Fourth Proportional to 8,115.44, 12,171.30 and 2,272.64

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Solution

The fourth proportional to 8,115.44, 12,171.30 and 2,272.64 is: 3,408.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.44 : 12,171.30 = 2,272.64 : x
  2. Step 2: Convert to fraction form
    8,115.44/12,171.30 = 2,272.64/x
  3. Step 3: Cross multiply
    8,115.44x = 12,171.30 × 2,272.64
  4. Step 4: Simplify right side
    8,115.44x = 27,660,983.23
  5. Step 5: Solve for x
    x = 27,660,983.23/8,115.44
  6. Step 6: Final answer
    x = 3,408.44

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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.