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Finding the Fourth Proportional to 4,786.97, 7,179.88 and 1,277.24

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Solution

The fourth proportional to 4,786.97, 7,179.88 and 1,277.24 is: 1,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.97 : 7,179.88 = 1,277.24 : x
  2. Step 2: Convert to fraction form
    4,786.97/7,179.88 = 1,277.24/x
  3. Step 3: Cross multiply
    4,786.97x = 7,179.88 × 1,277.24
  4. Step 4: Simplify right side
    4,786.97x = 9,170,429.93
  5. Step 5: Solve for x
    x = 9,170,429.93/4,786.97
  6. Step 6: Final answer
    x = 1,915.71

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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.