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Finding the Fourth Proportional to 7,993.52, 11,990.88 and 4,100.66

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Solution

The fourth proportional to 7,993.52, 11,990.88 and 4,100.66 is: 6,151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.52 : 11,990.88 = 4,100.66 : x
  2. Step 2: Convert to fraction form
    7,993.52/11,990.88 = 4,100.66/x
  3. Step 3: Cross multiply
    7,993.52x = 11,990.88 × 4,100.66
  4. Step 4: Simplify right side
    7,993.52x = 49,170,462.03
  5. Step 5: Solve for x
    x = 49,170,462.03/7,993.52
  6. Step 6: Final answer
    x = 6,151.29

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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.