Home / 2,150.20-3,221.70-1,840.60

Finding the Fourth Proportional to 2,150.20, 3,221.70 and 1,840.60

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Solution

The fourth proportional to 2,150.20, 3,221.70 and 1,840.60 is: 2,757.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.20 : 3,221.70 = 1,840.60 : x
  2. Step 2: Convert to fraction form
    2,150.20/3,221.70 = 1,840.60/x
  3. Step 3: Cross multiply
    2,150.20x = 3,221.70 × 1,840.60
  4. Step 4: Simplify right side
    2,150.20x = 5,929,861.02
  5. Step 5: Solve for x
    x = 5,929,861.02/2,150.20
  6. Step 6: Final answer
    x = 2,757.82

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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.