Home / 3,106.37-4,286.97-1,780.22

Finding the Fourth Proportional to 3,106.37, 4,286.97 and 1,780.22

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Solution

The fourth proportional to 3,106.37, 4,286.97 and 1,780.22 is: 2,456.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.37 : 4,286.97 = 1,780.22 : x
  2. Step 2: Convert to fraction form
    3,106.37/4,286.97 = 1,780.22/x
  3. Step 3: Cross multiply
    3,106.37x = 4,286.97 × 1,780.22
  4. Step 4: Simplify right side
    3,106.37x = 7,631,728.30
  5. Step 5: Solve for x
    x = 7,631,728.30/3,106.37
  6. Step 6: Final answer
    x = 2,456.80

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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.