Home / 3,190.80-4,786.08-1,110.60

Finding the Fourth Proportional to 3,190.80, 4,786.08 and 1,110.60

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Solution

The fourth proportional to 3,190.80, 4,786.08 and 1,110.60 is: 1,665.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.80 : 4,786.08 = 1,110.60 : x
  2. Step 2: Convert to fraction form
    3,190.80/4,786.08 = 1,110.60/x
  3. Step 3: Cross multiply
    3,190.80x = 4,786.08 × 1,110.60
  4. Step 4: Simplify right side
    3,190.80x = 5,315,420.45
  5. Step 5: Solve for x
    x = 5,315,420.45/3,190.80
  6. Step 6: Final answer
    x = 1,665.86

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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.