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Finding the Fourth Proportional to 7,990.69, 11,027.28 and 4,453.89

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Solution

The fourth proportional to 7,990.69, 11,027.28 and 4,453.89 is: 6,146.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.69 : 11,027.28 = 4,453.89 : x
  2. Step 2: Convert to fraction form
    7,990.69/11,027.28 = 4,453.89/x
  3. Step 3: Cross multiply
    7,990.69x = 11,027.28 × 4,453.89
  4. Step 4: Simplify right side
    7,990.69x = 49,114,292.12
  5. Step 5: Solve for x
    x = 49,114,292.12/7,990.69
  6. Step 6: Final answer
    x = 6,146.44

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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.