Home / 2,213.25-3,317.64-1,392.11

Finding the Fourth Proportional to 2,213.25, 3,317.64 and 1,392.11

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Solution

The fourth proportional to 2,213.25, 3,317.64 and 1,392.11 is: 2,086.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.25 : 3,317.64 = 1,392.11 : x
  2. Step 2: Convert to fraction form
    2,213.25/3,317.64 = 1,392.11/x
  3. Step 3: Cross multiply
    2,213.25x = 3,317.64 × 1,392.11
  4. Step 4: Simplify right side
    2,213.25x = 4,618,519.82
  5. Step 5: Solve for x
    x = 4,618,519.82/2,213.25
  6. Step 6: Final answer
    x = 2,086.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.