Home / 1,629.94-2,249.37-931.30

Finding the Fourth Proportional to 1,629.94, 2,249.37 and 931.30

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Solution

The fourth proportional to 1,629.94, 2,249.37 and 931.30 is: 1,285.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.94 : 2,249.37 = 931.30 : x
  2. Step 2: Convert to fraction form
    1,629.94/2,249.37 = 931.30/x
  3. Step 3: Cross multiply
    1,629.94x = 2,249.37 × 931.30
  4. Step 4: Simplify right side
    1,629.94x = 2,094,838.28
  5. Step 5: Solve for x
    x = 2,094,838.28/1,629.94
  6. Step 6: Final answer
    x = 1,285.22

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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.