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Finding the Fourth Proportional to 5,489.94, 7,576.02 and 3,131.64

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Solution

The fourth proportional to 5,489.94, 7,576.02 and 3,131.64 is: 4,321.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.94 : 7,576.02 = 3,131.64 : x
  2. Step 2: Convert to fraction form
    5,489.94/7,576.02 = 3,131.64/x
  3. Step 3: Cross multiply
    5,489.94x = 7,576.02 × 3,131.64
  4. Step 4: Simplify right side
    5,489.94x = 23,725,367.27
  5. Step 5: Solve for x
    x = 23,725,367.27/5,489.94
  6. Step 6: Final answer
    x = 4,321.61

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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.