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Finding the Fourth Proportional to 7,993.38, 11,991.38 and 2,445.42

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Solution

The fourth proportional to 7,993.38, 11,991.38 and 2,445.42 is: 3,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.38 : 11,991.38 = 2,445.42 : x
  2. Step 2: Convert to fraction form
    7,993.38/11,991.38 = 2,445.42/x
  3. Step 3: Cross multiply
    7,993.38x = 11,991.38 × 2,445.42
  4. Step 4: Simplify right side
    7,993.38x = 29,323,948.25
  5. Step 5: Solve for x
    x = 29,323,948.25/7,993.38
  6. Step 6: Final answer
    x = 3,668.53

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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.