Home / 1,949.35-2,923.25-1,128.20

Finding the Fourth Proportional to 1,949.35, 2,923.25 and 1,128.20

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Solution

The fourth proportional to 1,949.35, 2,923.25 and 1,128.20 is: 1,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.35 : 2,923.25 = 1,128.20 : x
  2. Step 2: Convert to fraction form
    1,949.35/2,923.25 = 1,128.20/x
  3. Step 3: Cross multiply
    1,949.35x = 2,923.25 × 1,128.20
  4. Step 4: Simplify right side
    1,949.35x = 3,298,022.99
  5. Step 5: Solve for x
    x = 3,298,022.99/1,949.35
  6. Step 6: Final answer
    x = 1,691.85

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1.5x scale

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.