Home / 8,105.12-12,157.68-2,261.72

Finding the Fourth Proportional to 8,105.12, 12,157.68 and 2,261.72

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Solution

The fourth proportional to 8,105.12, 12,157.68 and 2,261.72 is: 3,392.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.12 : 12,157.68 = 2,261.72 : x
  2. Step 2: Convert to fraction form
    8,105.12/12,157.68 = 2,261.72/x
  3. Step 3: Cross multiply
    8,105.12x = 12,157.68 × 2,261.72
  4. Step 4: Simplify right side
    8,105.12x = 27,497,268.01
  5. Step 5: Solve for x
    x = 27,497,268.01/8,105.12
  6. Step 6: Final answer
    x = 3,392.58

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Similar ratio
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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.