Home / 5,418.74-8,128.44-1,523.48

Finding the Fourth Proportional to 5,418.74, 8,128.44 and 1,523.48

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Solution

The fourth proportional to 5,418.74, 8,128.44 and 1,523.48 is: 2,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.74 : 8,128.44 = 1,523.48 : x
  2. Step 2: Convert to fraction form
    5,418.74/8,128.44 = 1,523.48/x
  3. Step 3: Cross multiply
    5,418.74x = 8,128.44 × 1,523.48
  4. Step 4: Simplify right side
    5,418.74x = 12,383,515.77
  5. Step 5: Solve for x
    x = 12,383,515.77/5,418.74
  6. Step 6: Final answer
    x = 2,285.31

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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.