Home / 2,853.62-4,280.37-905.82

Finding the Fourth Proportional to 2,853.62, 4,280.37 and 905.82

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Solution

The fourth proportional to 2,853.62, 4,280.37 and 905.82 is: 1,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.62 : 4,280.37 = 905.82 : x
  2. Step 2: Convert to fraction form
    2,853.62/4,280.37 = 905.82/x
  3. Step 3: Cross multiply
    2,853.62x = 4,280.37 × 905.82
  4. Step 4: Simplify right side
    2,853.62x = 3,877,244.75
  5. Step 5: Solve for x
    x = 3,877,244.75/2,853.62
  6. Step 6: Final answer
    x = 1,358.71

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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.