Home / 5,487.31-8,231.23-1,789.54

Finding the Fourth Proportional to 5,487.31, 8,231.23 and 1,789.54

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Solution

The fourth proportional to 5,487.31, 8,231.23 and 1,789.54 is: 2,684.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.31 : 8,231.23 = 1,789.54 : x
  2. Step 2: Convert to fraction form
    5,487.31/8,231.23 = 1,789.54/x
  3. Step 3: Cross multiply
    5,487.31x = 8,231.23 × 1,789.54
  4. Step 4: Simplify right side
    5,487.31x = 14,730,074.18
  5. Step 5: Solve for x
    x = 14,730,074.18/5,487.31
  6. Step 6: Final answer
    x = 2,684.39

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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.