Home / 2,976.21-4,107.04-1,781.73

Finding the Fourth Proportional to 2,976.21, 4,107.04 and 1,781.73

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Solution

The fourth proportional to 2,976.21, 4,107.04 and 1,781.73 is: 2,458.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.21 : 4,107.04 = 1,781.73 : x
  2. Step 2: Convert to fraction form
    2,976.21/4,107.04 = 1,781.73/x
  3. Step 3: Cross multiply
    2,976.21x = 4,107.04 × 1,781.73
  4. Step 4: Simplify right side
    2,976.21x = 7,317,631.92
  5. Step 5: Solve for x
    x = 7,317,631.92/2,976.21
  6. Step 6: Final answer
    x = 2,458.71

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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.