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Finding the Fourth Proportional to 8,027.12, 12,021.12 and 5,555

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Solution

The fourth proportional to 8,027.12, 12,021.12 and 5,555 is: 8,318.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,027.12 : 12,021.12 = 5,555 : x
  2. Step 2: Convert to fraction form
    8,027.12/12,021.12 = 5,555/x
  3. Step 3: Cross multiply
    8,027.12x = 12,021.12 × 5,555
  4. Step 4: Simplify right side
    8,027.12x = 66,777,321.60
  5. Step 5: Solve for x
    x = 66,777,321.60/8,027.12
  6. Step 6: Final answer
    x = 8,318.96

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Double scale
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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.