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Finding the Fourth Proportional to 6,651.91, 9,180.71 and 3,963.25

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Solution

The fourth proportional to 6,651.91, 9,180.71 and 3,963.25 is: 5,469.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.91 : 9,180.71 = 3,963.25 : x
  2. Step 2: Convert to fraction form
    6,651.91/9,180.71 = 3,963.25/x
  3. Step 3: Cross multiply
    6,651.91x = 9,180.71 × 3,963.25
  4. Step 4: Simplify right side
    6,651.91x = 36,385,448.91
  5. Step 5: Solve for x
    x = 36,385,448.91/6,651.91
  6. Step 6: Final answer
    x = 5,469.93

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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.