Home / 8,190.89-12,286.34-3,507.88

Finding the Fourth Proportional to 8,190.89, 12,286.34 and 3,507.88

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Solution

The fourth proportional to 8,190.89, 12,286.34 and 3,507.88 is: 5,261.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.89 : 12,286.34 = 3,507.88 : x
  2. Step 2: Convert to fraction form
    8,190.89/12,286.34 = 3,507.88/x
  3. Step 3: Cross multiply
    8,190.89x = 12,286.34 × 3,507.88
  4. Step 4: Simplify right side
    8,190.89x = 43,098,927.39
  5. Step 5: Solve for x
    x = 43,098,927.39/8,190.89
  6. Step 6: Final answer
    x = 5,261.81

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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.