Home / 1,910.44-2,865.80-611.88

Finding the Fourth Proportional to 1,910.44, 2,865.80 and 611.88

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Solution

The fourth proportional to 1,910.44, 2,865.80 and 611.88 is: 917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.44 : 2,865.80 = 611.88 : x
  2. Step 2: Convert to fraction form
    1,910.44/2,865.80 = 611.88/x
  3. Step 3: Cross multiply
    1,910.44x = 2,865.80 × 611.88
  4. Step 4: Simplify right side
    1,910.44x = 1,753,525.70
  5. Step 5: Solve for x
    x = 1,753,525.70/1,910.44
  6. Step 6: Final answer
    x = 917.86

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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.