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Finding the Fourth Proportional to 2,703.92, 4,055.85 and 855.03

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Solution

The fourth proportional to 2,703.92, 4,055.85 and 855.03 is: 1,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,703.92 : 4,055.85 = 855.03 : x
  2. Step 2: Convert to fraction form
    2,703.92/4,055.85 = 855.03/x
  3. Step 3: Cross multiply
    2,703.92x = 4,055.85 × 855.03
  4. Step 4: Simplify right side
    2,703.92x = 3,467,873.43
  5. Step 5: Solve for x
    x = 3,467,873.43/2,703.92
  6. Step 6: Final answer
    x = 1,282.54

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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.