Home / 3,578.21-5,370.45-1,913.66

Finding the Fourth Proportional to 3,578.21, 5,370.45 and 1,913.66

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Solution

The fourth proportional to 3,578.21, 5,370.45 and 1,913.66 is: 2,872.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.21 : 5,370.45 = 1,913.66 : x
  2. Step 2: Convert to fraction form
    3,578.21/5,370.45 = 1,913.66/x
  3. Step 3: Cross multiply
    3,578.21x = 5,370.45 × 1,913.66
  4. Step 4: Simplify right side
    3,578.21x = 10,277,234.88
  5. Step 5: Solve for x
    x = 10,277,234.88/3,578.21
  6. Step 6: Final answer
    x = 2,872.17

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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.