Home / 3,781.77-5,219.25-2,209.75

Finding the Fourth Proportional to 3,781.77, 5,219.25 and 2,209.75

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Solution

The fourth proportional to 3,781.77, 5,219.25 and 2,209.75 is: 3,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.77 : 5,219.25 = 2,209.75 : x
  2. Step 2: Convert to fraction form
    3,781.77/5,219.25 = 2,209.75/x
  3. Step 3: Cross multiply
    3,781.77x = 5,219.25 × 2,209.75
  4. Step 4: Simplify right side
    3,781.77x = 11,533,237.69
  5. Step 5: Solve for x
    x = 11,533,237.69/3,781.77
  6. Step 6: Final answer
    x = 3,049.69

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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.