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Finding the Fourth Proportional to 7,990.70, 11,027.04 and 4,453.89

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Solution

The fourth proportional to 7,990.70, 11,027.04 and 4,453.89 is: 6,146.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.70 : 11,027.04 = 4,453.89 : x
  2. Step 2: Convert to fraction form
    7,990.70/11,027.04 = 4,453.89/x
  3. Step 3: Cross multiply
    7,990.70x = 11,027.04 × 4,453.89
  4. Step 4: Simplify right side
    7,990.70x = 49,113,223.19
  5. Step 5: Solve for x
    x = 49,113,223.19/7,990.70
  6. Step 6: Final answer
    x = 6,146.30

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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.