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Finding the Fourth Proportional to 8,693.98, 13,040.96 and 2,120.22

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Solution

The fourth proportional to 8,693.98, 13,040.96 and 2,120.22 is: 3,180.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.98 : 13,040.96 = 2,120.22 : x
  2. Step 2: Convert to fraction form
    8,693.98/13,040.96 = 2,120.22/x
  3. Step 3: Cross multiply
    8,693.98x = 13,040.96 × 2,120.22
  4. Step 4: Simplify right side
    8,693.98x = 27,649,704.21
  5. Step 5: Solve for x
    x = 27,649,704.21/8,693.98
  6. Step 6: Final answer
    x = 3,180.33

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Similar ratio
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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.