Home / 3,781.72-5,218.01-2,209.51

Finding the Fourth Proportional to 3,781.72, 5,218.01 and 2,209.51

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Solution

The fourth proportional to 3,781.72, 5,218.01 and 2,209.51 is: 3,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.72 : 5,218.01 = 2,209.51 : x
  2. Step 2: Convert to fraction form
    3,781.72/5,218.01 = 2,209.51/x
  3. Step 3: Cross multiply
    3,781.72x = 5,218.01 × 2,209.51
  4. Step 4: Simplify right side
    3,781.72x = 11,529,240.75
  5. Step 5: Solve for x
    x = 11,529,240.75/3,781.72
  6. Step 6: Final answer
    x = 3,048.68

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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.