Home / 1,629.92-2,249.26-931.43

Finding the Fourth Proportional to 1,629.92, 2,249.26 and 931.43

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Solution

The fourth proportional to 1,629.92, 2,249.26 and 931.43 is: 1,285.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.92 : 2,249.26 = 931.43 : x
  2. Step 2: Convert to fraction form
    1,629.92/2,249.26 = 931.43/x
  3. Step 3: Cross multiply
    1,629.92x = 2,249.26 × 931.43
  4. Step 4: Simplify right side
    1,629.92x = 2,095,028.24
  5. Step 5: Solve for x
    x = 2,095,028.24/1,629.92
  6. Step 6: Final answer
    x = 1,285.36

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1.5x scale

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.