Home / 1,629.60-2,249.03-921.73

Finding the Fourth Proportional to 1,629.60, 2,249.03 and 921.73

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Solution

The fourth proportional to 1,629.60, 2,249.03 and 921.73 is: 1,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.60 : 2,249.03 = 921.73 : x
  2. Step 2: Convert to fraction form
    1,629.60/2,249.03 = 921.73/x
  3. Step 3: Cross multiply
    1,629.60x = 2,249.03 × 921.73
  4. Step 4: Simplify right side
    1,629.60x = 2,072,982.57
  5. Step 5: Solve for x
    x = 2,072,982.57/1,629.60
  6. Step 6: Final answer
    x = 1,272.08

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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.