Home / 7,919.79-11,880.32-2,076.38

Finding the Fourth Proportional to 7,919.79, 11,880.32 and 2,076.38

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Solution

The fourth proportional to 7,919.79, 11,880.32 and 2,076.38 is: 3,114.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.79 : 11,880.32 = 2,076.38 : x
  2. Step 2: Convert to fraction form
    7,919.79/11,880.32 = 2,076.38/x
  3. Step 3: Cross multiply
    7,919.79x = 11,880.32 × 2,076.38
  4. Step 4: Simplify right side
    7,919.79x = 24,667,989.06
  5. Step 5: Solve for x
    x = 24,667,989.06/7,919.79
  6. Step 6: Final answer
    x = 3,114.73

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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.