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Finding the Fourth Proportional to 3,640.52, 5,452.18 and 1,785.80

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Solution

The fourth proportional to 3,640.52, 5,452.18 and 1,785.80 is: 2,674.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.52 : 5,452.18 = 1,785.80 : x
  2. Step 2: Convert to fraction form
    3,640.52/5,452.18 = 1,785.80/x
  3. Step 3: Cross multiply
    3,640.52x = 5,452.18 × 1,785.80
  4. Step 4: Simplify right side
    3,640.52x = 9,736,503.04
  5. Step 5: Solve for x
    x = 9,736,503.04/3,640.52
  6. Step 6: Final answer
    x = 2,674.48

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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.