Home / 3,781.37-5,217.95-2,187.77

Finding the Fourth Proportional to 3,781.37, 5,217.95 and 2,187.77

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Solution

The fourth proportional to 3,781.37, 5,217.95 and 2,187.77 is: 3,018.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.37 : 5,217.95 = 2,187.77 : x
  2. Step 2: Convert to fraction form
    3,781.37/5,217.95 = 2,187.77/x
  3. Step 3: Cross multiply
    3,781.37x = 5,217.95 × 2,187.77
  4. Step 4: Simplify right side
    3,781.37x = 11,415,637.44
  5. Step 5: Solve for x
    x = 11,415,637.44/3,781.37
  6. Step 6: Final answer
    x = 3,018.92

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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.