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Finding the Fourth Proportional to 7,188.54, 10,789.11 and 3,493.50

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Solution

The fourth proportional to 7,188.54, 10,789.11 and 3,493.50 is: 5,243.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.54 : 10,789.11 = 3,493.50 : x
  2. Step 2: Convert to fraction form
    7,188.54/10,789.11 = 3,493.50/x
  3. Step 3: Cross multiply
    7,188.54x = 10,789.11 × 3,493.50
  4. Step 4: Simplify right side
    7,188.54x = 37,691,755.79
  5. Step 5: Solve for x
    x = 37,691,755.79/7,188.54
  6. Step 6: Final answer
    x = 5,243.31

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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.