Home / 1,396.04-2,093.85-422.21

Finding the Fourth Proportional to 1,396.04, 2,093.85 and 422.21

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Solution

The fourth proportional to 1,396.04, 2,093.85 and 422.21 is: 633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.04 : 2,093.85 = 422.21 : x
  2. Step 2: Convert to fraction form
    1,396.04/2,093.85 = 422.21/x
  3. Step 3: Cross multiply
    1,396.04x = 2,093.85 × 422.21
  4. Step 4: Simplify right side
    1,396.04x = 884,049.64
  5. Step 5: Solve for x
    x = 884,049.64/1,396.04
  6. Step 6: Final answer
    x = 633.26

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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.