Home / 3,780.80-5,214.92-2,286.14

Finding the Fourth Proportional to 3,780.80, 5,214.92 and 2,286.14

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Solution

The fourth proportional to 3,780.80, 5,214.92 and 2,286.14 is: 3,153.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.80 : 5,214.92 = 2,286.14 : x
  2. Step 2: Convert to fraction form
    3,780.80/5,214.92 = 2,286.14/x
  3. Step 3: Cross multiply
    3,780.80x = 5,214.92 × 2,286.14
  4. Step 4: Simplify right side
    3,780.80x = 11,922,037.21
  5. Step 5: Solve for x
    x = 11,922,037.21/3,780.80
  6. Step 6: Final answer
    x = 3,153.31

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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.