Home / 1,396.36-2,094.76-422.34

Finding the Fourth Proportional to 1,396.36, 2,094.76 and 422.34

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Solution

The fourth proportional to 1,396.36, 2,094.76 and 422.34 is: 633.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.36 : 2,094.76 = 422.34 : x
  2. Step 2: Convert to fraction form
    1,396.36/2,094.76 = 422.34/x
  3. Step 3: Cross multiply
    1,396.36x = 2,094.76 × 422.34
  4. Step 4: Simplify right side
    1,396.36x = 884,700.94
  5. Step 5: Solve for x
    x = 884,700.94/1,396.36
  6. Step 6: Final answer
    x = 633.58

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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.