Home / 3,105.09-4,660.16-1,790.24

Finding the Fourth Proportional to 3,105.09, 4,660.16 and 1,790.24

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Solution

The fourth proportional to 3,105.09, 4,660.16 and 1,790.24 is: 2,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.09 : 4,660.16 = 1,790.24 : x
  2. Step 2: Convert to fraction form
    3,105.09/4,660.16 = 1,790.24/x
  3. Step 3: Cross multiply
    3,105.09x = 4,660.16 × 1,790.24
  4. Step 4: Simplify right side
    3,105.09x = 8,342,772.59
  5. Step 5: Solve for x
    x = 8,342,772.59/3,105.09
  6. Step 6: Final answer
    x = 2,686.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.