Home / 2,128.19-2,936.90-1,183.96

Finding the Fourth Proportional to 2,128.19, 2,936.90 and 1,183.96

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Solution

The fourth proportional to 2,128.19, 2,936.90 and 1,183.96 is: 1,633.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.19 : 2,936.90 = 1,183.96 : x
  2. Step 2: Convert to fraction form
    2,128.19/2,936.90 = 1,183.96/x
  3. Step 3: Cross multiply
    2,128.19x = 2,936.90 × 1,183.96
  4. Step 4: Simplify right side
    2,128.19x = 3,477,151.52
  5. Step 5: Solve for x
    x = 3,477,151.52/2,128.19
  6. Step 6: Final answer
    x = 1,633.85

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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.