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Finding the Fourth Proportional to 8,672.05, 13,008.09 and 2,098.21

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Solution

The fourth proportional to 8,672.05, 13,008.09 and 2,098.21 is: 3,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.05 : 13,008.09 = 2,098.21 : x
  2. Step 2: Convert to fraction form
    8,672.05/13,008.09 = 2,098.21/x
  3. Step 3: Cross multiply
    8,672.05x = 13,008.09 × 2,098.21
  4. Step 4: Simplify right side
    8,672.05x = 27,293,704.52
  5. Step 5: Solve for x
    x = 27,293,704.52/8,672.05
  6. Step 6: Final answer
    x = 3,147.32

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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.