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Finding the Fourth Proportional to 8,992.88, 13,489.36 and 2,836.88

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Solution

The fourth proportional to 8,992.88, 13,489.36 and 2,836.88 is: 4,255.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.88 : 13,489.36 = 2,836.88 : x
  2. Step 2: Convert to fraction form
    8,992.88/13,489.36 = 2,836.88/x
  3. Step 3: Cross multiply
    8,992.88x = 13,489.36 × 2,836.88
  4. Step 4: Simplify right side
    8,992.88x = 38,267,695.60
  5. Step 5: Solve for x
    x = 38,267,695.60/8,992.88
  6. Step 6: Final answer
    x = 4,255.33

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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.