Home / 3,778.83-5,215.05-2,185.80

Finding the Fourth Proportional to 3,778.83, 5,215.05 and 2,185.80

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Solution

The fourth proportional to 3,778.83, 5,215.05 and 2,185.80 is: 3,016.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.83 : 5,215.05 = 2,185.80 : x
  2. Step 2: Convert to fraction form
    3,778.83/5,215.05 = 2,185.80/x
  3. Step 3: Cross multiply
    3,778.83x = 5,215.05 × 2,185.80
  4. Step 4: Simplify right side
    3,778.83x = 11,399,056.29
  5. Step 5: Solve for x
    x = 11,399,056.29/3,778.83
  6. Step 6: Final answer
    x = 3,016.56

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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.