Home / 11,240.56-16,860.85-2,919.88

Finding the Fourth Proportional to 11,240.56, 16,860.85 and 2,919.88

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Solution

The fourth proportional to 11,240.56, 16,860.85 and 2,919.88 is: 4,379.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,240.56 : 16,860.85 = 2,919.88 : x
  2. Step 2: Convert to fraction form
    11,240.56/16,860.85 = 2,919.88/x
  3. Step 3: Cross multiply
    11,240.56x = 16,860.85 × 2,919.88
  4. Step 4: Simplify right side
    11,240.56x = 49,231,609.25
  5. Step 5: Solve for x
    x = 49,231,609.25/11,240.56
  6. Step 6: Final answer
    x = 4,379.82

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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.