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Finding the Fourth Proportional to 2,858.26, 4,287.36 and 910.63

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Solution

The fourth proportional to 2,858.26, 4,287.36 and 910.63 is: 1,365.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.26 : 4,287.36 = 910.63 : x
  2. Step 2: Convert to fraction form
    2,858.26/4,287.36 = 910.63/x
  3. Step 3: Cross multiply
    2,858.26x = 4,287.36 × 910.63
  4. Step 4: Simplify right side
    2,858.26x = 3,904,198.64
  5. Step 5: Solve for x
    x = 3,904,198.64/2,858.26
  6. Step 6: Final answer
    x = 1,365.94

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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.