Home / 5,209.10-7,817.82-2,745.38

Finding the Fourth Proportional to 5,209.10, 7,817.82 and 2,745.38

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Solution

The fourth proportional to 5,209.10, 7,817.82 and 2,745.38 is: 4,120.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.10 : 7,817.82 = 2,745.38 : x
  2. Step 2: Convert to fraction form
    5,209.10/7,817.82 = 2,745.38/x
  3. Step 3: Cross multiply
    5,209.10x = 7,817.82 × 2,745.38
  4. Step 4: Simplify right side
    5,209.10x = 21,462,886.67
  5. Step 5: Solve for x
    x = 21,462,886.67/5,209.10
  6. Step 6: Final answer
    x = 4,120.27

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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.