Home / 3,107.32-4,285.90-1,910.75

Finding the Fourth Proportional to 3,107.32, 4,285.90 and 1,910.75

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Solution

The fourth proportional to 3,107.32, 4,285.90 and 1,910.75 is: 2,635.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.32 : 4,285.90 = 1,910.75 : x
  2. Step 2: Convert to fraction form
    3,107.32/4,285.90 = 1,910.75/x
  3. Step 3: Cross multiply
    3,107.32x = 4,285.90 × 1,910.75
  4. Step 4: Simplify right side
    3,107.32x = 8,189,258.66
  5. Step 5: Solve for x
    x = 8,189,258.66/3,107.32
  6. Step 6: Final answer
    x = 2,635.47

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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.