Home / 5,436.20-8,148.72-2,147.96

Finding the Fourth Proportional to 5,436.20, 8,148.72 and 2,147.96

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Solution

The fourth proportional to 5,436.20, 8,148.72 and 2,147.96 is: 3,219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.20 : 8,148.72 = 2,147.96 : x
  2. Step 2: Convert to fraction form
    5,436.20/8,148.72 = 2,147.96/x
  3. Step 3: Cross multiply
    5,436.20x = 8,148.72 × 2,147.96
  4. Step 4: Simplify right side
    5,436.20x = 17,503,124.61
  5. Step 5: Solve for x
    x = 17,503,124.61/5,436.20
  6. Step 6: Final answer
    x = 3,219.74

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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.