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Finding the Fourth Proportional to 6,644.94, 9,171.09 and 4,128.54

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Solution

The fourth proportional to 6,644.94, 9,171.09 and 4,128.54 is: 5,698.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644.94 : 9,171.09 = 4,128.54 : x
  2. Step 2: Convert to fraction form
    6,644.94/9,171.09 = 4,128.54/x
  3. Step 3: Cross multiply
    6,644.94x = 9,171.09 × 4,128.54
  4. Step 4: Simplify right side
    6,644.94x = 37,863,211.91
  5. Step 5: Solve for x
    x = 37,863,211.91/6,644.94
  6. Step 6: Final answer
    x = 5,698.05

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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.