Home / 3,640.20-5,023.68-2,148.60

Finding the Fourth Proportional to 3,640.20, 5,023.68 and 2,148.60

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Solution

The fourth proportional to 3,640.20, 5,023.68 and 2,148.60 is: 2,965.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.20 : 5,023.68 = 2,148.60 : x
  2. Step 2: Convert to fraction form
    3,640.20/5,023.68 = 2,148.60/x
  3. Step 3: Cross multiply
    3,640.20x = 5,023.68 × 2,148.60
  4. Step 4: Simplify right side
    3,640.20x = 10,793,878.85
  5. Step 5: Solve for x
    x = 10,793,878.85/3,640.20
  6. Step 6: Final answer
    x = 2,965.19

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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.