Home / 3,857.11-5,784.65-1,391.47

Finding the Fourth Proportional to 3,857.11, 5,784.65 and 1,391.47

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Solution

The fourth proportional to 3,857.11, 5,784.65 and 1,391.47 is: 2,086.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.11 : 5,784.65 = 1,391.47 : x
  2. Step 2: Convert to fraction form
    3,857.11/5,784.65 = 1,391.47/x
  3. Step 3: Cross multiply
    3,857.11x = 5,784.65 × 1,391.47
  4. Step 4: Simplify right side
    3,857.11x = 8,049,166.94
  5. Step 5: Solve for x
    x = 8,049,166.94/3,857.11
  6. Step 6: Final answer
    x = 2,086.84

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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.