Home / 7,939.76-11,913.06-3,782.72

Finding the Fourth Proportional to 7,939.76, 11,913.06 and 3,782.72

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Solution

The fourth proportional to 7,939.76, 11,913.06 and 3,782.72 is: 5,675.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.76 : 11,913.06 = 3,782.72 : x
  2. Step 2: Convert to fraction form
    7,939.76/11,913.06 = 3,782.72/x
  3. Step 3: Cross multiply
    7,939.76x = 11,913.06 × 3,782.72
  4. Step 4: Simplify right side
    7,939.76x = 45,063,770.32
  5. Step 5: Solve for x
    x = 45,063,770.32/7,939.76
  6. Step 6: Final answer
    x = 5,675.71

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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.