Home / 3,910.58-5,866.55-1,720.85

Finding the Fourth Proportional to 3,910.58, 5,866.55 and 1,720.85

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Solution

The fourth proportional to 3,910.58, 5,866.55 and 1,720.85 is: 2,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.58 : 5,866.55 = 1,720.85 : x
  2. Step 2: Convert to fraction form
    3,910.58/5,866.55 = 1,720.85/x
  3. Step 3: Cross multiply
    3,910.58x = 5,866.55 × 1,720.85
  4. Step 4: Simplify right side
    3,910.58x = 10,095,414.63
  5. Step 5: Solve for x
    x = 10,095,414.63/3,910.58
  6. Step 6: Final answer
    x = 2,581.57

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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.