Home / 5,414.63-8,121.94-1,310.63

Finding the Fourth Proportional to 5,414.63, 8,121.94 and 1,310.63

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Solution

The fourth proportional to 5,414.63, 8,121.94 and 1,310.63 is: 1,965.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.63 : 8,121.94 = 1,310.63 : x
  2. Step 2: Convert to fraction form
    5,414.63/8,121.94 = 1,310.63/x
  3. Step 3: Cross multiply
    5,414.63x = 8,121.94 × 1,310.63
  4. Step 4: Simplify right side
    5,414.63x = 10,644,814.34
  5. Step 5: Solve for x
    x = 10,644,814.34/5,414.63
  6. Step 6: Final answer
    x = 1,965.94

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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.