Home / 3,087.92-4,629.12-1,139.66

Finding the Fourth Proportional to 3,087.92, 4,629.12 and 1,139.66

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Solution

The fourth proportional to 3,087.92, 4,629.12 and 1,139.66 is: 1,708.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.92 : 4,629.12 = 1,139.66 : x
  2. Step 2: Convert to fraction form
    3,087.92/4,629.12 = 1,139.66/x
  3. Step 3: Cross multiply
    3,087.92x = 4,629.12 × 1,139.66
  4. Step 4: Simplify right side
    3,087.92x = 5,275,622.90
  5. Step 5: Solve for x
    x = 5,275,622.90/3,087.92
  6. Step 6: Final answer
    x = 1,708.47

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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.