Home / 3,961.64-5,931.52-2,984.78

Finding the Fourth Proportional to 3,961.64, 5,931.52 and 2,984.78

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Solution

The fourth proportional to 3,961.64, 5,931.52 and 2,984.78 is: 4,468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.64 : 5,931.52 = 2,984.78 : x
  2. Step 2: Convert to fraction form
    3,961.64/5,931.52 = 2,984.78/x
  3. Step 3: Cross multiply
    3,961.64x = 5,931.52 × 2,984.78
  4. Step 4: Simplify right side
    3,961.64x = 17,704,282.27
  5. Step 5: Solve for x
    x = 17,704,282.27/3,961.64
  6. Step 6: Final answer
    x = 4,468.93

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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.