Home / 7,942.72-11,913.17-2,099.79

Finding the Fourth Proportional to 7,942.72, 11,913.17 and 2,099.79

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Solution

The fourth proportional to 7,942.72, 11,913.17 and 2,099.79 is: 3,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.72 : 11,913.17 = 2,099.79 : x
  2. Step 2: Convert to fraction form
    7,942.72/11,913.17 = 2,099.79/x
  3. Step 3: Cross multiply
    7,942.72x = 11,913.17 × 2,099.79
  4. Step 4: Simplify right side
    7,942.72x = 25,015,155.23
  5. Step 5: Solve for x
    x = 25,015,155.23/7,942.72
  6. Step 6: Final answer
    x = 3,149.44

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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.