Home / 3,830.46-5,286.05-2,151.93

Finding the Fourth Proportional to 3,830.46, 5,286.05 and 2,151.93

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Solution

The fourth proportional to 3,830.46, 5,286.05 and 2,151.93 is: 2,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.46 : 5,286.05 = 2,151.93 : x
  2. Step 2: Convert to fraction form
    3,830.46/5,286.05 = 2,151.93/x
  3. Step 3: Cross multiply
    3,830.46x = 5,286.05 × 2,151.93
  4. Step 4: Simplify right side
    3,830.46x = 11,375,226.71
  5. Step 5: Solve for x
    x = 11,375,226.71/3,830.46
  6. Step 6: Final answer
    x = 2,969.68

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1.5x scale

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.