Home / 1,910.45-2,865.79-611.82

Finding the Fourth Proportional to 1,910.45, 2,865.79 and 611.82

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Solution

The fourth proportional to 1,910.45, 2,865.79 and 611.82 is: 917.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.45 : 2,865.79 = 611.82 : x
  2. Step 2: Convert to fraction form
    1,910.45/2,865.79 = 611.82/x
  3. Step 3: Cross multiply
    1,910.45x = 2,865.79 × 611.82
  4. Step 4: Simplify right side
    1,910.45x = 1,753,346.11
  5. Step 5: Solve for x
    x = 1,753,346.11/1,910.45
  6. Step 6: Final answer
    x = 917.77

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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.