Home / 3,107.34-4,288.19-1,691.12

Finding the Fourth Proportional to 3,107.34, 4,288.19 and 1,691.12

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Solution

The fourth proportional to 3,107.34, 4,288.19 and 1,691.12 is: 2,333.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.34 : 4,288.19 = 1,691.12 : x
  2. Step 2: Convert to fraction form
    3,107.34/4,288.19 = 1,691.12/x
  3. Step 3: Cross multiply
    3,107.34x = 4,288.19 × 1,691.12
  4. Step 4: Simplify right side
    3,107.34x = 7,251,846.14
  5. Step 5: Solve for x
    x = 7,251,846.14/3,107.34
  6. Step 6: Final answer
    x = 2,333.78

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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.