Home / 1,910.40-2,865.60-677.84

Finding the Fourth Proportional to 1,910.40, 2,865.60 and 677.84

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Solution

The fourth proportional to 1,910.40, 2,865.60 and 677.84 is: 1,016.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.40 : 2,865.60 = 677.84 : x
  2. Step 2: Convert to fraction form
    1,910.40/2,865.60 = 677.84/x
  3. Step 3: Cross multiply
    1,910.40x = 2,865.60 × 677.84
  4. Step 4: Simplify right side
    1,910.40x = 1,942,425.47
  5. Step 5: Solve for x
    x = 1,942,425.47/1,910.40
  6. Step 6: Final answer
    x = 1,016.77

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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.