Home / 3,830.54-5,285.94-2,151.68

Finding the Fourth Proportional to 3,830.54, 5,285.94 and 2,151.68

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Solution

The fourth proportional to 3,830.54, 5,285.94 and 2,151.68 is: 2,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.54 : 5,285.94 = 2,151.68 : x
  2. Step 2: Convert to fraction form
    3,830.54/5,285.94 = 2,151.68/x
  3. Step 3: Cross multiply
    3,830.54x = 5,285.94 × 2,151.68
  4. Step 4: Simplify right side
    3,830.54x = 11,373,624.95
  5. Step 5: Solve for x
    x = 11,373,624.95/3,830.54
  6. Step 6: Final answer
    x = 2,969.20

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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.