Home / 5,431.38-8,148.21-3,092.50

Finding the Fourth Proportional to 5,431.38, 8,148.21 and 3,092.50

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Solution

The fourth proportional to 5,431.38, 8,148.21 and 3,092.50 is: 4,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.38 : 8,148.21 = 3,092.50 : x
  2. Step 2: Convert to fraction form
    5,431.38/8,148.21 = 3,092.50/x
  3. Step 3: Cross multiply
    5,431.38x = 8,148.21 × 3,092.50
  4. Step 4: Simplify right side
    5,431.38x = 25,198,339.43
  5. Step 5: Solve for x
    x = 25,198,339.43/5,431.38
  6. Step 6: Final answer
    x = 4,639.40

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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.