Home / 3,830.50-5,285.70-2,151.82

Finding the Fourth Proportional to 3,830.50, 5,285.70 and 2,151.82

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Solution

The fourth proportional to 3,830.50, 5,285.70 and 2,151.82 is: 2,969.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.50 : 5,285.70 = 2,151.82 : x
  2. Step 2: Convert to fraction form
    3,830.50/5,285.70 = 2,151.82/x
  3. Step 3: Cross multiply
    3,830.50x = 5,285.70 × 2,151.82
  4. Step 4: Simplify right side
    3,830.50x = 11,373,874.97
  5. Step 5: Solve for x
    x = 11,373,874.97/3,830.50
  6. Step 6: Final answer
    x = 2,969.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.