Home / 3,784.22-5,222.40-2,105.60

Finding the Fourth Proportional to 3,784.22, 5,222.40 and 2,105.60

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Solution

The fourth proportional to 3,784.22, 5,222.40 and 2,105.60 is: 2,905.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784.22 : 5,222.40 = 2,105.60 : x
  2. Step 2: Convert to fraction form
    3,784.22/5,222.40 = 2,105.60/x
  3. Step 3: Cross multiply
    3,784.22x = 5,222.40 × 2,105.60
  4. Step 4: Simplify right side
    3,784.22x = 10,996,285.44
  5. Step 5: Solve for x
    x = 10,996,285.44/3,784.22
  6. Step 6: Final answer
    x = 2,905.83

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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.