Home / 2,629.40-3,944.10-2,613.20

Finding the Fourth Proportional to 2,629.40, 3,944.10 and 2,613.20

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Solution

The fourth proportional to 2,629.40, 3,944.10 and 2,613.20 is: 3,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.40 : 3,944.10 = 2,613.20 : x
  2. Step 2: Convert to fraction form
    2,629.40/3,944.10 = 2,613.20/x
  3. Step 3: Cross multiply
    2,629.40x = 3,944.10 × 2,613.20
  4. Step 4: Simplify right side
    2,629.40x = 10,306,722.12
  5. Step 5: Solve for x
    x = 10,306,722.12/2,629.40
  6. Step 6: Final answer
    x = 3,919.80

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Similar ratio
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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.