Home / 8,181.86-12,270.36-2,988.14

Finding the Fourth Proportional to 8,181.86, 12,270.36 and 2,988.14

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Solution

The fourth proportional to 8,181.86, 12,270.36 and 2,988.14 is: 4,481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.86 : 12,270.36 = 2,988.14 : x
  2. Step 2: Convert to fraction form
    8,181.86/12,270.36 = 2,988.14/x
  3. Step 3: Cross multiply
    8,181.86x = 12,270.36 × 2,988.14
  4. Step 4: Simplify right side
    8,181.86x = 36,665,553.53
  5. Step 5: Solve for x
    x = 36,665,553.53/8,181.86
  6. Step 6: Final answer
    x = 4,481.32

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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.