Home / 5,415.26-8,123.10-1,519.77

Finding the Fourth Proportional to 5,415.26, 8,123.10 and 1,519.77

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Solution

The fourth proportional to 5,415.26, 8,123.10 and 1,519.77 is: 2,279.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.26 : 8,123.10 = 1,519.77 : x
  2. Step 2: Convert to fraction form
    5,415.26/8,123.10 = 1,519.77/x
  3. Step 3: Cross multiply
    5,415.26x = 8,123.10 × 1,519.77
  4. Step 4: Simplify right side
    5,415.26x = 12,345,236.09
  5. Step 5: Solve for x
    x = 12,345,236.09/5,415.26
  6. Step 6: Final answer
    x = 2,279.71

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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.