Home / 3,778.70-5,213.11-2,185.06

Finding the Fourth Proportional to 3,778.70, 5,213.11 and 2,185.06

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Solution

The fourth proportional to 3,778.70, 5,213.11 and 2,185.06 is: 3,014.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.70 : 5,213.11 = 2,185.06 : x
  2. Step 2: Convert to fraction form
    3,778.70/5,213.11 = 2,185.06/x
  3. Step 3: Cross multiply
    3,778.70x = 5,213.11 × 2,185.06
  4. Step 4: Simplify right side
    3,778.70x = 11,390,932.07
  5. Step 5: Solve for x
    x = 11,390,932.07/3,778.70
  6. Step 6: Final answer
    x = 3,014.51

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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.