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Finding the Fourth Proportional to 8,005.64, 12,000.09 and 2,739.09

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Solution

The fourth proportional to 8,005.64, 12,000.09 and 2,739.09 is: 4,105.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.64 : 12,000.09 = 2,739.09 : x
  2. Step 2: Convert to fraction form
    8,005.64/12,000.09 = 2,739.09/x
  3. Step 3: Cross multiply
    8,005.64x = 12,000.09 × 2,739.09
  4. Step 4: Simplify right side
    8,005.64x = 32,869,331.46
  5. Step 5: Solve for x
    x = 32,869,331.46/8,005.64
  6. Step 6: Final answer
    x = 4,105.77

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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.