Home / 8,181.91-12,276.51-2,986.57

Finding the Fourth Proportional to 8,181.91, 12,276.51 and 2,986.57

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Solution

The fourth proportional to 8,181.91, 12,276.51 and 2,986.57 is: 4,481.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.91 : 12,276.51 = 2,986.57 : x
  2. Step 2: Convert to fraction form
    8,181.91/12,276.51 = 2,986.57/x
  3. Step 3: Cross multiply
    8,181.91x = 12,276.51 × 2,986.57
  4. Step 4: Simplify right side
    8,181.91x = 36,664,656.47
  5. Step 5: Solve for x
    x = 36,664,656.47/8,181.91
  6. Step 6: Final answer
    x = 4,481.19

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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.