Home / 7,447.85-11,167.96-3,939.75

Finding the Fourth Proportional to 7,447.85, 11,167.96 and 3,939.75

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Solution

The fourth proportional to 7,447.85, 11,167.96 and 3,939.75 is: 5,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.85 : 11,167.96 = 3,939.75 : x
  2. Step 2: Convert to fraction form
    7,447.85/11,167.96 = 3,939.75/x
  3. Step 3: Cross multiply
    7,447.85x = 11,167.96 × 3,939.75
  4. Step 4: Simplify right side
    7,447.85x = 43,998,950.71
  5. Step 5: Solve for x
    x = 43,998,950.71/7,447.85
  6. Step 6: Final answer
    x = 5,907.60

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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.