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Finding the Fourth Proportional to 3,769.28, 5,658.54 and 3,620.64

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Solution

The fourth proportional to 3,769.28, 5,658.54 and 3,620.64 is: 5,435.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,769.28 : 5,658.54 = 3,620.64 : x
  2. Step 2: Convert to fraction form
    3,769.28/5,658.54 = 3,620.64/x
  3. Step 3: Cross multiply
    3,769.28x = 5,658.54 × 3,620.64
  4. Step 4: Simplify right side
    3,769.28x = 20,487,536.27
  5. Step 5: Solve for x
    x = 20,487,536.27/3,769.28
  6. Step 6: Final answer
    x = 5,435.40

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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.