Home / 8,286.72-12,431.52-3,670.08

Finding the Fourth Proportional to 8,286.72, 12,431.52 and 3,670.08

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Solution

The fourth proportional to 8,286.72, 12,431.52 and 3,670.08 is: 5,505.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.72 : 12,431.52 = 3,670.08 : x
  2. Step 2: Convert to fraction form
    8,286.72/12,431.52 = 3,670.08/x
  3. Step 3: Cross multiply
    8,286.72x = 12,431.52 × 3,670.08
  4. Step 4: Simplify right side
    8,286.72x = 45,624,672.92
  5. Step 5: Solve for x
    x = 45,624,672.92/8,286.72
  6. Step 6: Final answer
    x = 5,505.76

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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.