Home / 5,455.23-8,186.43-2,991.78

Finding the Fourth Proportional to 5,455.23, 8,186.43 and 2,991.78

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Solution

The fourth proportional to 5,455.23, 8,186.43 and 2,991.78 is: 4,489.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.23 : 8,186.43 = 2,991.78 : x
  2. Step 2: Convert to fraction form
    5,455.23/8,186.43 = 2,991.78/x
  3. Step 3: Cross multiply
    5,455.23x = 8,186.43 × 2,991.78
  4. Step 4: Simplify right side
    5,455.23x = 24,491,961.24
  5. Step 5: Solve for x
    x = 24,491,961.24/5,455.23
  6. Step 6: Final answer
    x = 4,489.63

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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.