Home / 3,857.48-5,786.25-1,260.43

Finding the Fourth Proportional to 3,857.48, 5,786.25 and 1,260.43

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Solution

The fourth proportional to 3,857.48, 5,786.25 and 1,260.43 is: 1,890.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.48 : 5,786.25 = 1,260.43 : x
  2. Step 2: Convert to fraction form
    3,857.48/5,786.25 = 1,260.43/x
  3. Step 3: Cross multiply
    3,857.48x = 5,786.25 × 1,260.43
  4. Step 4: Simplify right side
    3,857.48x = 7,293,163.09
  5. Step 5: Solve for x
    x = 7,293,163.09/3,857.48
  6. Step 6: Final answer
    x = 1,890.65

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1.5x scale

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.