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Finding the Fourth Proportional to 7,093.66, 9,789.60 and 3,949.78

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Solution

The fourth proportional to 7,093.66, 9,789.60 and 3,949.78 is: 5,450.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,093.66 : 9,789.60 = 3,949.78 : x
  2. Step 2: Convert to fraction form
    7,093.66/9,789.60 = 3,949.78/x
  3. Step 3: Cross multiply
    7,093.66x = 9,789.60 × 3,949.78
  4. Step 4: Simplify right side
    7,093.66x = 38,666,766.29
  5. Step 5: Solve for x
    x = 38,666,766.29/7,093.66
  6. Step 6: Final answer
    x = 5,450.89

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1.5x scale

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.