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Finding the Fourth Proportional to 6,672.21, 10,005.02 and 3,899.71

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Solution

The fourth proportional to 6,672.21, 10,005.02 and 3,899.71 is: 5,847.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.21 : 10,005.02 = 3,899.71 : x
  2. Step 2: Convert to fraction form
    6,672.21/10,005.02 = 3,899.71/x
  3. Step 3: Cross multiply
    6,672.21x = 10,005.02 × 3,899.71
  4. Step 4: Simplify right side
    6,672.21x = 39,016,684.18
  5. Step 5: Solve for x
    x = 39,016,684.18/6,672.21
  6. Step 6: Final answer
    x = 5,847.64

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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.