Home / 3,115.97-4,300.04-1,789.64

Finding the Fourth Proportional to 3,115.97, 4,300.04 and 1,789.64

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Solution

The fourth proportional to 3,115.97, 4,300.04 and 1,789.64 is: 2,469.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.97 : 4,300.04 = 1,789.64 : x
  2. Step 2: Convert to fraction form
    3,115.97/4,300.04 = 1,789.64/x
  3. Step 3: Cross multiply
    3,115.97x = 4,300.04 × 1,789.64
  4. Step 4: Simplify right side
    3,115.97x = 7,695,536.81
  5. Step 5: Solve for x
    x = 7,695,536.81/3,115.97
  6. Step 6: Final answer
    x = 2,469.71

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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.