Home / 3,860.24-5,786.72-1,261.36

Finding the Fourth Proportional to 3,860.24, 5,786.72 and 1,261.36

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Solution

The fourth proportional to 3,860.24, 5,786.72 and 1,261.36 is: 1,890.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.24 : 5,786.72 = 1,261.36 : x
  2. Step 2: Convert to fraction form
    3,860.24/5,786.72 = 1,261.36/x
  3. Step 3: Cross multiply
    3,860.24x = 5,786.72 × 1,261.36
  4. Step 4: Simplify right side
    3,860.24x = 7,299,137.14
  5. Step 5: Solve for x
    x = 7,299,137.14/3,860.24
  6. Step 6: Final answer
    x = 1,890.85

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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.