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Finding the Fourth Proportional to 5,487.21, 8,229.97 and 1,789.43

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Solution

The fourth proportional to 5,487.21, 8,229.97 and 1,789.43 is: 2,683.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.21 : 8,229.97 = 1,789.43 : x
  2. Step 2: Convert to fraction form
    5,487.21/8,229.97 = 1,789.43/x
  3. Step 3: Cross multiply
    5,487.21x = 8,229.97 × 1,789.43
  4. Step 4: Simplify right side
    5,487.21x = 14,726,955.22
  5. Step 5: Solve for x
    x = 14,726,955.22/5,487.21
  6. Step 6: Final answer
    x = 2,683.87

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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.