Home / 3,781.06-5,217.51-2,187.45

Finding the Fourth Proportional to 3,781.06, 5,217.51 and 2,187.45

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Solution

The fourth proportional to 3,781.06, 5,217.51 and 2,187.45 is: 3,018.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.06 : 5,217.51 = 2,187.45 : x
  2. Step 2: Convert to fraction form
    3,781.06/5,217.51 = 2,187.45/x
  3. Step 3: Cross multiply
    3,781.06x = 5,217.51 × 2,187.45
  4. Step 4: Simplify right side
    3,781.06x = 11,413,042.25
  5. Step 5: Solve for x
    x = 11,413,042.25/3,781.06
  6. Step 6: Final answer
    x = 3,018.48

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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.