Home / 3,830.58-5,286.08-2,151.95

Finding the Fourth Proportional to 3,830.58, 5,286.08 and 2,151.95

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Solution

The fourth proportional to 3,830.58, 5,286.08 and 2,151.95 is: 2,969.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.58 : 5,286.08 = 2,151.95 : x
  2. Step 2: Convert to fraction form
    3,830.58/5,286.08 = 2,151.95/x
  3. Step 3: Cross multiply
    3,830.58x = 5,286.08 × 2,151.95
  4. Step 4: Simplify right side
    3,830.58x = 11,375,358.81
  5. Step 5: Solve for x
    x = 11,375,358.81/3,830.58
  6. Step 6: Final answer
    x = 2,969.62

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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.