Home / 3,857.12-5,784.16-1,391.08

Finding the Fourth Proportional to 3,857.12, 5,784.16 and 1,391.08

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Solution

The fourth proportional to 3,857.12, 5,784.16 and 1,391.08 is: 2,086.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.12 : 5,784.16 = 1,391.08 : x
  2. Step 2: Convert to fraction form
    3,857.12/5,784.16 = 1,391.08/x
  3. Step 3: Cross multiply
    3,857.12x = 5,784.16 × 1,391.08
  4. Step 4: Simplify right side
    3,857.12x = 8,046,229.29
  5. Step 5: Solve for x
    x = 8,046,229.29/3,857.12
  6. Step 6: Final answer
    x = 2,086.07

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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.