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Finding the Fourth Proportional to 5,661.28, 8,489.28 and 2,151.94

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Solution

The fourth proportional to 5,661.28, 8,489.28 and 2,151.94 is: 3,226.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.28 : 8,489.28 = 2,151.94 : x
  2. Step 2: Convert to fraction form
    5,661.28/8,489.28 = 2,151.94/x
  3. Step 3: Cross multiply
    5,661.28x = 8,489.28 × 2,151.94
  4. Step 4: Simplify right side
    5,661.28x = 18,268,421.20
  5. Step 5: Solve for x
    x = 18,268,421.20/5,661.28
  6. Step 6: Final answer
    x = 3,226.91

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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.