Home / 2,789.46-4,183.58-841.21

Finding the Fourth Proportional to 2,789.46, 4,183.58 and 841.21

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Solution

The fourth proportional to 2,789.46, 4,183.58 and 841.21 is: 1,261.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.46 : 4,183.58 = 841.21 : x
  2. Step 2: Convert to fraction form
    2,789.46/4,183.58 = 841.21/x
  3. Step 3: Cross multiply
    2,789.46x = 4,183.58 × 841.21
  4. Step 4: Simplify right side
    2,789.46x = 3,519,260.98
  5. Step 5: Solve for x
    x = 3,519,260.98/2,789.46
  6. Step 6: Final answer
    x = 1,261.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.