Home / 1,910.30-2,865.93-611.77

Finding the Fourth Proportional to 1,910.30, 2,865.93 and 611.77

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Solution

The fourth proportional to 1,910.30, 2,865.93 and 611.77 is: 917.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.30 : 2,865.93 = 611.77 : x
  2. Step 2: Convert to fraction form
    1,910.30/2,865.93 = 611.77/x
  3. Step 3: Cross multiply
    1,910.30x = 2,865.93 × 611.77
  4. Step 4: Simplify right side
    1,910.30x = 1,753,290.00
  5. Step 5: Solve for x
    x = 1,753,290.00/1,910.30
  6. Step 6: Final answer
    x = 917.81

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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.