Home / 5,427.20-8,122.80-3,942.20

Finding the Fourth Proportional to 5,427.20, 8,122.80 and 3,942.20

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Solution

The fourth proportional to 5,427.20, 8,122.80 and 3,942.20 is: 5,900.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.20 : 8,122.80 = 3,942.20 : x
  2. Step 2: Convert to fraction form
    5,427.20/8,122.80 = 3,942.20/x
  3. Step 3: Cross multiply
    5,427.20x = 8,122.80 × 3,942.20
  4. Step 4: Simplify right side
    5,427.20x = 32,021,702.16
  5. Step 5: Solve for x
    x = 32,021,702.16/5,427.20
  6. Step 6: Final answer
    x = 5,900.23

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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.