Home / 3,781.74-5,218.33-2,290.35

Finding the Fourth Proportional to 3,781.74, 5,218.33 and 2,290.35

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Solution

The fourth proportional to 3,781.74, 5,218.33 and 2,290.35 is: 3,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.74 : 5,218.33 = 2,290.35 : x
  2. Step 2: Convert to fraction form
    3,781.74/5,218.33 = 2,290.35/x
  3. Step 3: Cross multiply
    3,781.74x = 5,218.33 × 2,290.35
  4. Step 4: Simplify right side
    3,781.74x = 11,951,802.12
  5. Step 5: Solve for x
    x = 11,951,802.12/3,781.74
  6. Step 6: Final answer
    x = 3,160.40

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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.