Home / 3,418.57-5,126.50-1,338.22

Finding the Fourth Proportional to 3,418.57, 5,126.50 and 1,338.22

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Solution

The fourth proportional to 3,418.57, 5,126.50 and 1,338.22 is: 2,006.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.57 : 5,126.50 = 1,338.22 : x
  2. Step 2: Convert to fraction form
    3,418.57/5,126.50 = 1,338.22/x
  3. Step 3: Cross multiply
    3,418.57x = 5,126.50 × 1,338.22
  4. Step 4: Simplify right side
    3,418.57x = 6,860,384.83
  5. Step 5: Solve for x
    x = 6,860,384.83/3,418.57
  6. Step 6: Final answer
    x = 2,006.80

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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.