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Finding the Fourth Proportional to 7,990.25, 11,026.13 and 4,453.38

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Solution

The fourth proportional to 7,990.25, 11,026.13 and 4,453.38 is: 6,145.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.25 : 11,026.13 = 4,453.38 : x
  2. Step 2: Convert to fraction form
    7,990.25/11,026.13 = 4,453.38/x
  3. Step 3: Cross multiply
    7,990.25x = 11,026.13 × 4,453.38
  4. Step 4: Simplify right side
    7,990.25x = 49,103,524.55
  5. Step 5: Solve for x
    x = 49,103,524.55/7,990.25
  6. Step 6: Final answer
    x = 6,145.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.