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Finding the Fourth Proportional to 2,675.87, 4,014 and 728.09

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Solution

The fourth proportional to 2,675.87, 4,014 and 728.09 is: 1,092.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.87 : 4,014 = 728.09 : x
  2. Step 2: Convert to fraction form
    2,675.87/4,014 = 728.09/x
  3. Step 3: Cross multiply
    2,675.87x = 4,014 × 728.09
  4. Step 4: Simplify right side
    2,675.87x = 2,922,533.19
  5. Step 5: Solve for x
    x = 2,922,533.19/2,675.87
  6. Step 6: Final answer
    x = 1,092.18

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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.