Home / 2,940.80-4,057.74-1,997.34

Finding the Fourth Proportional to 2,940.80, 4,057.74 and 1,997.34

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Solution

The fourth proportional to 2,940.80, 4,057.74 and 1,997.34 is: 2,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.80 : 4,057.74 = 1,997.34 : x
  2. Step 2: Convert to fraction form
    2,940.80/4,057.74 = 1,997.34/x
  3. Step 3: Cross multiply
    2,940.80x = 4,057.74 × 1,997.34
  4. Step 4: Simplify right side
    2,940.80x = 8,104,686.41
  5. Step 5: Solve for x
    x = 8,104,686.41/2,940.80
  6. Step 6: Final answer
    x = 2,755.95

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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.