Home / 3,787.86-5,682.69-1,190.80

Finding the Fourth Proportional to 3,787.86, 5,682.69 and 1,190.80

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Solution

The fourth proportional to 3,787.86, 5,682.69 and 1,190.80 is: 1,786.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.86 : 5,682.69 = 1,190.80 : x
  2. Step 2: Convert to fraction form
    3,787.86/5,682.69 = 1,190.80/x
  3. Step 3: Cross multiply
    3,787.86x = 5,682.69 × 1,190.80
  4. Step 4: Simplify right side
    3,787.86x = 6,766,954.36
  5. Step 5: Solve for x
    x = 6,766,954.36/3,787.86
  6. Step 6: Final answer
    x = 1,786.48

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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.