Home / 3,122.20-4,309.74-2,074.60

Finding the Fourth Proportional to 3,122.20, 4,309.74 and 2,074.60

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Solution

The fourth proportional to 3,122.20, 4,309.74 and 2,074.60 is: 2,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.20 : 4,309.74 = 2,074.60 : x
  2. Step 2: Convert to fraction form
    3,122.20/4,309.74 = 2,074.60/x
  3. Step 3: Cross multiply
    3,122.20x = 4,309.74 × 2,074.60
  4. Step 4: Simplify right side
    3,122.20x = 8,940,986.60
  5. Step 5: Solve for x
    x = 8,940,986.60/3,122.20
  6. Step 6: Final answer
    x = 2,863.68

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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.