Home / 2,961.28-4,086.89-2,213.95

Finding the Fourth Proportional to 2,961.28, 4,086.89 and 2,213.95

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Solution

The fourth proportional to 2,961.28, 4,086.89 and 2,213.95 is: 3,055.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.28 : 4,086.89 = 2,213.95 : x
  2. Step 2: Convert to fraction form
    2,961.28/4,086.89 = 2,213.95/x
  3. Step 3: Cross multiply
    2,961.28x = 4,086.89 × 2,213.95
  4. Step 4: Simplify right side
    2,961.28x = 9,048,170.12
  5. Step 5: Solve for x
    x = 9,048,170.12/2,961.28
  6. Step 6: Final answer
    x = 3,055.49

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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.