Home / 5,218.83-7,830.45-2,755.44

Finding the Fourth Proportional to 5,218.83, 7,830.45 and 2,755.44

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Solution

The fourth proportional to 5,218.83, 7,830.45 and 2,755.44 is: 4,134.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.83 : 7,830.45 = 2,755.44 : x
  2. Step 2: Convert to fraction form
    5,218.83/7,830.45 = 2,755.44/x
  3. Step 3: Cross multiply
    5,218.83x = 7,830.45 × 2,755.44
  4. Step 4: Simplify right side
    5,218.83x = 21,576,335.15
  5. Step 5: Solve for x
    x = 21,576,335.15/5,218.83
  6. Step 6: Final answer
    x = 4,134.32

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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.