Home / 3,781.49-5,217.66-2,289.51

Finding the Fourth Proportional to 3,781.49, 5,217.66 and 2,289.51

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Solution

The fourth proportional to 3,781.49, 5,217.66 and 2,289.51 is: 3,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.49 : 5,217.66 = 2,289.51 : x
  2. Step 2: Convert to fraction form
    3,781.49/5,217.66 = 2,289.51/x
  3. Step 3: Cross multiply
    3,781.49x = 5,217.66 × 2,289.51
  4. Step 4: Simplify right side
    3,781.49x = 11,945,884.75
  5. Step 5: Solve for x
    x = 11,945,884.75/3,781.49
  6. Step 6: Final answer
    x = 3,159.05

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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.