Home / 8,729.64-13,086.72-3,181.86

Finding the Fourth Proportional to 8,729.64, 13,086.72 and 3,181.86

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Solution

The fourth proportional to 8,729.64, 13,086.72 and 3,181.86 is: 4,769.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.64 : 13,086.72 = 3,181.86 : x
  2. Step 2: Convert to fraction form
    8,729.64/13,086.72 = 3,181.86/x
  3. Step 3: Cross multiply
    8,729.64x = 13,086.72 × 3,181.86
  4. Step 4: Simplify right side
    8,729.64x = 41,640,110.90
  5. Step 5: Solve for x
    x = 41,640,110.90/8,729.64
  6. Step 6: Final answer
    x = 4,769.97

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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.