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Finding the Fourth Proportional to 7,149.41, 9,866.22 and 3,963.23

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Solution

The fourth proportional to 7,149.41, 9,866.22 and 3,963.23 is: 5,469.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.41 : 9,866.22 = 3,963.23 : x
  2. Step 2: Convert to fraction form
    7,149.41/9,866.22 = 3,963.23/x
  3. Step 3: Cross multiply
    7,149.41x = 9,866.22 × 3,963.23
  4. Step 4: Simplify right side
    7,149.41x = 39,102,071.90
  5. Step 5: Solve for x
    x = 39,102,071.90/7,149.41
  6. Step 6: Final answer
    x = 5,469.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.