Home / 3,578.80-4,936.32-2,915.68

Finding the Fourth Proportional to 3,578.80, 4,936.32 and 2,915.68

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Solution

The fourth proportional to 3,578.80, 4,936.32 and 2,915.68 is: 4,021.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.80 : 4,936.32 = 2,915.68 : x
  2. Step 2: Convert to fraction form
    3,578.80/4,936.32 = 2,915.68/x
  3. Step 3: Cross multiply
    3,578.80x = 4,936.32 × 2,915.68
  4. Step 4: Simplify right side
    3,578.80x = 14,392,729.50
  5. Step 5: Solve for x
    x = 14,392,729.50/3,578.80
  6. Step 6: Final answer
    x = 4,021.66

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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.