Home / 2,128.07-2,936.76-1,183.88

Finding the Fourth Proportional to 2,128.07, 2,936.76 and 1,183.88

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Solution

The fourth proportional to 2,128.07, 2,936.76 and 1,183.88 is: 1,633.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.07 : 2,936.76 = 1,183.88 : x
  2. Step 2: Convert to fraction form
    2,128.07/2,936.76 = 1,183.88/x
  3. Step 3: Cross multiply
    2,128.07x = 2,936.76 × 1,183.88
  4. Step 4: Simplify right side
    2,128.07x = 3,476,774.33
  5. Step 5: Solve for x
    x = 3,476,774.33/2,128.07
  6. Step 6: Final answer
    x = 1,633.77

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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.