Home / 3,629.28-5,445.62-2,520.40

Finding the Fourth Proportional to 3,629.28, 5,445.62 and 2,520.40

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Solution

The fourth proportional to 3,629.28, 5,445.62 and 2,520.40 is: 3,781.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.28 : 5,445.62 = 2,520.40 : x
  2. Step 2: Convert to fraction form
    3,629.28/5,445.62 = 2,520.40/x
  3. Step 3: Cross multiply
    3,629.28x = 5,445.62 × 2,520.40
  4. Step 4: Simplify right side
    3,629.28x = 13,725,140.65
  5. Step 5: Solve for x
    x = 13,725,140.65/3,629.28
  6. Step 6: Final answer
    x = 3,781.78

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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.