Home / 5,211.33-7,812.87-1,922.61

Finding the Fourth Proportional to 5,211.33, 7,812.87 and 1,922.61

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Solution

The fourth proportional to 5,211.33, 7,812.87 and 1,922.61 is: 2,882.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.33 : 7,812.87 = 1,922.61 : x
  2. Step 2: Convert to fraction form
    5,211.33/7,812.87 = 1,922.61/x
  3. Step 3: Cross multiply
    5,211.33x = 7,812.87 × 1,922.61
  4. Step 4: Simplify right side
    5,211.33x = 15,021,101.99
  5. Step 5: Solve for x
    x = 15,021,101.99/5,211.33
  6. Step 6: Final answer
    x = 2,882.39

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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.