Home / 2,850.35-4,272.26-1,287.99

Finding the Fourth Proportional to 2,850.35, 4,272.26 and 1,287.99

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Solution

The fourth proportional to 2,850.35, 4,272.26 and 1,287.99 is: 1,930.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.35 : 4,272.26 = 1,287.99 : x
  2. Step 2: Convert to fraction form
    2,850.35/4,272.26 = 1,287.99/x
  3. Step 3: Cross multiply
    2,850.35x = 4,272.26 × 1,287.99
  4. Step 4: Simplify right side
    2,850.35x = 5,502,621.72
  5. Step 5: Solve for x
    x = 5,502,621.72/2,850.35
  6. Step 6: Final answer
    x = 1,930.51

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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.