Home / 3,778.67-5,213.07-2,185.02

Finding the Fourth Proportional to 3,778.67, 5,213.07 and 2,185.02

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Solution

The fourth proportional to 3,778.67, 5,213.07 and 2,185.02 is: 3,014.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.67 : 5,213.07 = 2,185.02 : x
  2. Step 2: Convert to fraction form
    3,778.67/5,213.07 = 2,185.02/x
  3. Step 3: Cross multiply
    3,778.67x = 5,213.07 × 2,185.02
  4. Step 4: Simplify right side
    3,778.67x = 11,390,664.32
  5. Step 5: Solve for x
    x = 11,390,664.32/3,778.67
  6. Step 6: Final answer
    x = 3,014.47

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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.