Home / 3,122.97-4,683.09-1,661.78

Finding the Fourth Proportional to 3,122.97, 4,683.09 and 1,661.78

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Solution

The fourth proportional to 3,122.97, 4,683.09 and 1,661.78 is: 2,491.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.97 : 4,683.09 = 1,661.78 : x
  2. Step 2: Convert to fraction form
    3,122.97/4,683.09 = 1,661.78/x
  3. Step 3: Cross multiply
    3,122.97x = 4,683.09 × 1,661.78
  4. Step 4: Simplify right side
    3,122.97x = 7,782,245.28
  5. Step 5: Solve for x
    x = 7,782,245.28/3,122.97
  6. Step 6: Final answer
    x = 2,491.94

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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.