Home / 8,122.18-12,183.36-2,857.34

Finding the Fourth Proportional to 8,122.18, 12,183.36 and 2,857.34

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Solution

The fourth proportional to 8,122.18, 12,183.36 and 2,857.34 is: 4,286.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.18 : 12,183.36 = 2,857.34 : x
  2. Step 2: Convert to fraction form
    8,122.18/12,183.36 = 2,857.34/x
  3. Step 3: Cross multiply
    8,122.18x = 12,183.36 × 2,857.34
  4. Step 4: Simplify right side
    8,122.18x = 34,812,001.86
  5. Step 5: Solve for x
    x = 34,812,001.86/8,122.18
  6. Step 6: Final answer
    x = 4,286.04

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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.