Home / 7,919.92-11,880.16-2,076.32

Finding the Fourth Proportional to 7,919.92, 11,880.16 and 2,076.32

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Solution

The fourth proportional to 7,919.92, 11,880.16 and 2,076.32 is: 3,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.92 : 11,880.16 = 2,076.32 : x
  2. Step 2: Convert to fraction form
    7,919.92/11,880.16 = 2,076.32/x
  3. Step 3: Cross multiply
    7,919.92x = 11,880.16 × 2,076.32
  4. Step 4: Simplify right side
    7,919.92x = 24,667,013.81
  5. Step 5: Solve for x
    x = 24,667,013.81/7,919.92
  6. Step 6: Final answer
    x = 3,114.55

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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.