Home / 3,857.25-5,784.68-1,391.75

Finding the Fourth Proportional to 3,857.25, 5,784.68 and 1,391.75

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Solution

The fourth proportional to 3,857.25, 5,784.68 and 1,391.75 is: 2,087.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.25 : 5,784.68 = 1,391.75 : x
  2. Step 2: Convert to fraction form
    3,857.25/5,784.68 = 1,391.75/x
  3. Step 3: Cross multiply
    3,857.25x = 5,784.68 × 1,391.75
  4. Step 4: Simplify right side
    3,857.25x = 8,050,828.39
  5. Step 5: Solve for x
    x = 8,050,828.39/3,857.25
  6. Step 6: Final answer
    x = 2,087.19

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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.