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Finding the Fourth Proportional to 8,064.60, 11,149.11 and 7,990.71

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Solution

The fourth proportional to 8,064.60, 11,149.11 and 7,990.71 is: 11,046.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,064.60 : 11,149.11 = 7,990.71 : x
  2. Step 2: Convert to fraction form
    8,064.60/11,149.11 = 7,990.71/x
  3. Step 3: Cross multiply
    8,064.60x = 11,149.11 × 7,990.71
  4. Step 4: Simplify right side
    8,064.60x = 89,089,304.77
  5. Step 5: Solve for x
    x = 89,089,304.77/8,064.60
  6. Step 6: Final answer
    x = 11,046.96

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Similar ratio
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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.