Home / 3,781.23-5,218.09-2,102.58

Finding the Fourth Proportional to 3,781.23, 5,218.09 and 2,102.58

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Solution

The fourth proportional to 3,781.23, 5,218.09 and 2,102.58 is: 2,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.23 : 5,218.09 = 2,102.58 : x
  2. Step 2: Convert to fraction form
    3,781.23/5,218.09 = 2,102.58/x
  3. Step 3: Cross multiply
    3,781.23x = 5,218.09 × 2,102.58
  4. Step 4: Simplify right side
    3,781.23x = 10,971,446.42
  5. Step 5: Solve for x
    x = 10,971,446.42/3,781.23
  6. Step 6: Final answer
    x = 2,901.56

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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.