Home / 8,540.82-12,812.61-3,611.88

Finding the Fourth Proportional to 8,540.82, 12,812.61 and 3,611.88

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Solution

The fourth proportional to 8,540.82, 12,812.61 and 3,611.88 is: 5,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.82 : 12,812.61 = 3,611.88 : x
  2. Step 2: Convert to fraction form
    8,540.82/12,812.61 = 3,611.88/x
  3. Step 3: Cross multiply
    8,540.82x = 12,812.61 × 3,611.88
  4. Step 4: Simplify right side
    8,540.82x = 46,277,609.81
  5. Step 5: Solve for x
    x = 46,277,609.81/8,540.82
  6. Step 6: Final answer
    x = 5,418.40

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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.