Home / 8,121.30-12,183.67-2,573.91

Finding the Fourth Proportional to 8,121.30, 12,183.67 and 2,573.91

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Solution

The fourth proportional to 8,121.30, 12,183.67 and 2,573.91 is: 3,861.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.30 : 12,183.67 = 2,573.91 : x
  2. Step 2: Convert to fraction form
    8,121.30/12,183.67 = 2,573.91/x
  3. Step 3: Cross multiply
    8,121.30x = 12,183.67 × 2,573.91
  4. Step 4: Simplify right side
    8,121.30x = 31,359,658.79
  5. Step 5: Solve for x
    x = 31,359,658.79/8,121.30
  6. Step 6: Final answer
    x = 3,861.41

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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.