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Finding the Fourth Proportional to 8,000.62, 11,999.48 and 2,155.86

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Solution

The fourth proportional to 8,000.62, 11,999.48 and 2,155.86 is: 3,233.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.62 : 11,999.48 = 2,155.86 : x
  2. Step 2: Convert to fraction form
    8,000.62/11,999.48 = 2,155.86/x
  3. Step 3: Cross multiply
    8,000.62x = 11,999.48 × 2,155.86
  4. Step 4: Simplify right side
    8,000.62x = 25,869,198.95
  5. Step 5: Solve for x
    x = 25,869,198.95/8,000.62
  6. Step 6: Final answer
    x = 3,233.40

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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.