Home / 1,882.32-2,823.96-727.68

Finding the Fourth Proportional to 1,882.32, 2,823.96 and 727.68

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Solution

The fourth proportional to 1,882.32, 2,823.96 and 727.68 is: 1,091.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,882.32 : 2,823.96 = 727.68 : x
  2. Step 2: Convert to fraction form
    1,882.32/2,823.96 = 727.68/x
  3. Step 3: Cross multiply
    1,882.32x = 2,823.96 × 727.68
  4. Step 4: Simplify right side
    1,882.32x = 2,054,939.21
  5. Step 5: Solve for x
    x = 2,054,939.21/1,882.32
  6. Step 6: Final answer
    x = 1,091.71

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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.