Home / 3,783.54-5,221.31-2,105.13

Finding the Fourth Proportional to 3,783.54, 5,221.31 and 2,105.13

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Solution

The fourth proportional to 3,783.54, 5,221.31 and 2,105.13 is: 2,905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.54 : 5,221.31 = 2,105.13 : x
  2. Step 2: Convert to fraction form
    3,783.54/5,221.31 = 2,105.13/x
  3. Step 3: Cross multiply
    3,783.54x = 5,221.31 × 2,105.13
  4. Step 4: Simplify right side
    3,783.54x = 10,991,525.79
  5. Step 5: Solve for x
    x = 10,991,525.79/3,783.54
  6. Step 6: Final answer
    x = 2,905.09

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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.