Home / 3,972.78-5,962.73-2,919.92

Finding the Fourth Proportional to 3,972.78, 5,962.73 and 2,919.92

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Solution

The fourth proportional to 3,972.78, 5,962.73 and 2,919.92 is: 4,382.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.78 : 5,962.73 = 2,919.92 : x
  2. Step 2: Convert to fraction form
    3,972.78/5,962.73 = 2,919.92/x
  3. Step 3: Cross multiply
    3,972.78x = 5,962.73 × 2,919.92
  4. Step 4: Simplify right side
    3,972.78x = 17,410,650.17
  5. Step 5: Solve for x
    x = 17,410,650.17/3,972.78
  6. Step 6: Final answer
    x = 4,382.49

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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.