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Finding the Fourth Proportional to 2,936.00, 4,403.39 and 855.74

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Solution

The fourth proportional to 2,936.00, 4,403.39 and 855.74 is: 1,283.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,936.00 : 4,403.39 = 855.74 : x
  2. Step 2: Convert to fraction form
    2,936.00/4,403.39 = 855.74/x
  3. Step 3: Cross multiply
    2,936.00x = 4,403.39 × 855.74
  4. Step 4: Simplify right side
    2,936.00x = 3,768,130.66
  5. Step 5: Solve for x
    x = 3,768,130.66/2,936.00
  6. Step 6: Final answer
    x = 1,283.43

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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.