Home / 3,107.92-4,288.85-1,691.64

Finding the Fourth Proportional to 3,107.92, 4,288.85 and 1,691.64

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Solution

The fourth proportional to 3,107.92, 4,288.85 and 1,691.64 is: 2,334.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.92 : 4,288.85 = 1,691.64 : x
  2. Step 2: Convert to fraction form
    3,107.92/4,288.85 = 1,691.64/x
  3. Step 3: Cross multiply
    3,107.92x = 4,288.85 × 1,691.64
  4. Step 4: Simplify right side
    3,107.92x = 7,255,160.31
  5. Step 5: Solve for x
    x = 7,255,160.31/3,107.92
  6. Step 6: Final answer
    x = 2,334.41

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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.