Home / 3,640.20-5,022.30-2,147.55

Finding the Fourth Proportional to 3,640.20, 5,022.30 and 2,147.55

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Solution

The fourth proportional to 3,640.20, 5,022.30 and 2,147.55 is: 2,962.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.20 : 5,022.30 = 2,147.55 : x
  2. Step 2: Convert to fraction form
    3,640.20/5,022.30 = 2,147.55/x
  3. Step 3: Cross multiply
    3,640.20x = 5,022.30 × 2,147.55
  4. Step 4: Simplify right side
    3,640.20x = 10,785,640.37
  5. Step 5: Solve for x
    x = 10,785,640.37/3,640.20
  6. Step 6: Final answer
    x = 2,962.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.