Home / 3,910.73-5,866.83-1,689.56

Finding the Fourth Proportional to 3,910.73, 5,866.83 and 1,689.56

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Solution

The fourth proportional to 3,910.73, 5,866.83 and 1,689.56 is: 2,534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.73 : 5,866.83 = 1,689.56 : x
  2. Step 2: Convert to fraction form
    3,910.73/5,866.83 = 1,689.56/x
  3. Step 3: Cross multiply
    3,910.73x = 5,866.83 × 1,689.56
  4. Step 4: Simplify right side
    3,910.73x = 9,912,331.96
  5. Step 5: Solve for x
    x = 9,912,331.96/3,910.73
  6. Step 6: Final answer
    x = 2,534.65

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1.5x scale

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.