Home / 7,789.89-11,691.46-3,113.18

Finding the Fourth Proportional to 7,789.89, 11,691.46 and 3,113.18

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Solution

The fourth proportional to 7,789.89, 11,691.46 and 3,113.18 is: 4,672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.89 : 11,691.46 = 3,113.18 : x
  2. Step 2: Convert to fraction form
    7,789.89/11,691.46 = 3,113.18/x
  3. Step 3: Cross multiply
    7,789.89x = 11,691.46 × 3,113.18
  4. Step 4: Simplify right side
    7,789.89x = 36,397,584.59
  5. Step 5: Solve for x
    x = 36,397,584.59/7,789.89
  6. Step 6: Final answer
    x = 4,672.41

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1.5x scale

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.