Home / 4,786.80-7,177.26-1,861.70

Finding the Fourth Proportional to 4,786.80, 7,177.26 and 1,861.70

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Solution

The fourth proportional to 4,786.80, 7,177.26 and 1,861.70 is: 2,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.80 : 7,177.26 = 1,861.70 : x
  2. Step 2: Convert to fraction form
    4,786.80/7,177.26 = 1,861.70/x
  3. Step 3: Cross multiply
    4,786.80x = 7,177.26 × 1,861.70
  4. Step 4: Simplify right side
    4,786.80x = 13,361,904.94
  5. Step 5: Solve for x
    x = 13,361,904.94/4,786.80
  6. Step 6: Final answer
    x = 2,791.41

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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.