Home / 2,622.88-3,930.36-2,072.80

Finding the Fourth Proportional to 2,622.88, 3,930.36 and 2,072.80

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Solution

The fourth proportional to 2,622.88, 3,930.36 and 2,072.80 is: 3,106.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.88 : 3,930.36 = 2,072.80 : x
  2. Step 2: Convert to fraction form
    2,622.88/3,930.36 = 2,072.80/x
  3. Step 3: Cross multiply
    2,622.88x = 3,930.36 × 2,072.80
  4. Step 4: Simplify right side
    2,622.88x = 8,146,850.21
  5. Step 5: Solve for x
    x = 8,146,850.21/2,622.88
  6. Step 6: Final answer
    x = 3,106.07

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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.