Home / 7,447.35-11,167.21-3,939.25

Finding the Fourth Proportional to 7,447.35, 11,167.21 and 3,939.25

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Solution

The fourth proportional to 7,447.35, 11,167.21 and 3,939.25 is: 5,906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.35 : 11,167.21 = 3,939.25 : x
  2. Step 2: Convert to fraction form
    7,447.35/11,167.21 = 3,939.25/x
  3. Step 3: Cross multiply
    7,447.35x = 11,167.21 × 3,939.25
  4. Step 4: Simplify right side
    7,447.35x = 43,990,412.30
  5. Step 5: Solve for x
    x = 43,990,412.30/7,447.35
  6. Step 6: Final answer
    x = 5,906.85

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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.