Home / 1,469.25-2,202.39-921.81

Finding the Fourth Proportional to 1,469.25, 2,202.39 and 921.81

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Solution

The fourth proportional to 1,469.25, 2,202.39 and 921.81 is: 1,381.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.25 : 2,202.39 = 921.81 : x
  2. Step 2: Convert to fraction form
    1,469.25/2,202.39 = 921.81/x
  3. Step 3: Cross multiply
    1,469.25x = 2,202.39 × 921.81
  4. Step 4: Simplify right side
    1,469.25x = 2,030,185.13
  5. Step 5: Solve for x
    x = 2,030,185.13/1,469.25
  6. Step 6: Final answer
    x = 1,381.78

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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.