Home / 3,860.40-5,786.79-1,518.94

Finding the Fourth Proportional to 3,860.40, 5,786.79 and 1,518.94

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Solution

The fourth proportional to 3,860.40, 5,786.79 and 1,518.94 is: 2,276.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.40 : 5,786.79 = 1,518.94 : x
  2. Step 2: Convert to fraction form
    3,860.40/5,786.79 = 1,518.94/x
  3. Step 3: Cross multiply
    3,860.40x = 5,786.79 × 1,518.94
  4. Step 4: Simplify right side
    3,860.40x = 8,789,786.80
  5. Step 5: Solve for x
    x = 8,789,786.80/3,860.40
  6. Step 6: Final answer
    x = 2,276.91

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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.