Home / 5,385.23-8,078.24-1,687.44

Finding the Fourth Proportional to 5,385.23, 8,078.24 and 1,687.44

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Solution

The fourth proportional to 5,385.23, 8,078.24 and 1,687.44 is: 2,531.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.23 : 8,078.24 = 1,687.44 : x
  2. Step 2: Convert to fraction form
    5,385.23/8,078.24 = 1,687.44/x
  3. Step 3: Cross multiply
    5,385.23x = 8,078.24 × 1,687.44
  4. Step 4: Simplify right side
    5,385.23x = 13,631,549.52
  5. Step 5: Solve for x
    x = 13,631,549.52/5,385.23
  6. Step 6: Final answer
    x = 2,531.29

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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.