Home / 3,107.45-4,288.37-1,691.23

Finding the Fourth Proportional to 3,107.45, 4,288.37 and 1,691.23

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Solution

The fourth proportional to 3,107.45, 4,288.37 and 1,691.23 is: 2,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.45 : 4,288.37 = 1,691.23 : x
  2. Step 2: Convert to fraction form
    3,107.45/4,288.37 = 1,691.23/x
  3. Step 3: Cross multiply
    3,107.45x = 4,288.37 × 1,691.23
  4. Step 4: Simplify right side
    3,107.45x = 7,252,620.00
  5. Step 5: Solve for x
    x = 7,252,620.00/3,107.45
  6. Step 6: Final answer
    x = 2,333.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.