Home / 3,783.69-5,221.44-2,105.01

Finding the Fourth Proportional to 3,783.69, 5,221.44 and 2,105.01

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Solution

The fourth proportional to 3,783.69, 5,221.44 and 2,105.01 is: 2,904.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.69 : 5,221.44 = 2,105.01 : x
  2. Step 2: Convert to fraction form
    3,783.69/5,221.44 = 2,105.01/x
  3. Step 3: Cross multiply
    3,783.69x = 5,221.44 × 2,105.01
  4. Step 4: Simplify right side
    3,783.69x = 10,991,183.41
  5. Step 5: Solve for x
    x = 10,991,183.41/3,783.69
  6. Step 6: Final answer
    x = 2,904.88

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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.