Home / 3,578.40-4,940.46-2,235.42

Finding the Fourth Proportional to 3,578.40, 4,940.46 and 2,235.42

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Solution

The fourth proportional to 3,578.40, 4,940.46 and 2,235.42 is: 3,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.40 : 4,940.46 = 2,235.42 : x
  2. Step 2: Convert to fraction form
    3,578.40/4,940.46 = 2,235.42/x
  3. Step 3: Cross multiply
    3,578.40x = 4,940.46 × 2,235.42
  4. Step 4: Simplify right side
    3,578.40x = 11,044,003.09
  5. Step 5: Solve for x
    x = 11,044,003.09/3,578.40
  6. Step 6: Final answer
    x = 3,086.30

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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.