Home / 3,910.80-5,865.32-1,137.44

Finding the Fourth Proportional to 3,910.80, 5,865.32 and 1,137.44

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Solution

The fourth proportional to 3,910.80, 5,865.32 and 1,137.44 is: 1,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.80 : 5,865.32 = 1,137.44 : x
  2. Step 2: Convert to fraction form
    3,910.80/5,865.32 = 1,137.44/x
  3. Step 3: Cross multiply
    3,910.80x = 5,865.32 × 1,137.44
  4. Step 4: Simplify right side
    3,910.80x = 6,671,449.58
  5. Step 5: Solve for x
    x = 6,671,449.58/3,910.80
  6. Step 6: Final answer
    x = 1,705.90

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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.