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Finding the Fourth Proportional to 6,636.80, 9,942.24 and 4,033.28

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Solution

The fourth proportional to 6,636.80, 9,942.24 and 4,033.28 is: 6,042.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,636.80 : 9,942.24 = 4,033.28 : x
  2. Step 2: Convert to fraction form
    6,636.80/9,942.24 = 4,033.28/x
  3. Step 3: Cross multiply
    6,636.80x = 9,942.24 × 4,033.28
  4. Step 4: Simplify right side
    6,636.80x = 40,099,837.75
  5. Step 5: Solve for x
    x = 40,099,837.75/6,636.80
  6. Step 6: Final answer
    x = 6,042.04

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1.5x scale

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.