Home / 3,783.73-5,221.63-2,105.20

Finding the Fourth Proportional to 3,783.73, 5,221.63 and 2,105.20

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Solution

The fourth proportional to 3,783.73, 5,221.63 and 2,105.20 is: 2,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.73 : 5,221.63 = 2,105.20 : x
  2. Step 2: Convert to fraction form
    3,783.73/5,221.63 = 2,105.20/x
  3. Step 3: Cross multiply
    3,783.73x = 5,221.63 × 2,105.20
  4. Step 4: Simplify right side
    3,783.73x = 10,992,575.48
  5. Step 5: Solve for x
    x = 10,992,575.48/3,783.73
  6. Step 6: Final answer
    x = 2,905.22

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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.