Home / 3,489.07-4,815.75-1,997.85

Finding the Fourth Proportional to 3,489.07, 4,815.75 and 1,997.85

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Solution

The fourth proportional to 3,489.07, 4,815.75 and 1,997.85 is: 2,757.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.07 : 4,815.75 = 1,997.85 : x
  2. Step 2: Convert to fraction form
    3,489.07/4,815.75 = 1,997.85/x
  3. Step 3: Cross multiply
    3,489.07x = 4,815.75 × 1,997.85
  4. Step 4: Simplify right side
    3,489.07x = 9,621,146.14
  5. Step 5: Solve for x
    x = 9,621,146.14/3,489.07
  6. Step 6: Final answer
    x = 2,757.51

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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.