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Finding the Fourth Proportional to 2,675.91, 4,014.08 and 728.07

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Solution

The fourth proportional to 2,675.91, 4,014.08 and 728.07 is: 1,092.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.91 : 4,014.08 = 728.07 : x
  2. Step 2: Convert to fraction form
    2,675.91/4,014.08 = 728.07/x
  3. Step 3: Cross multiply
    2,675.91x = 4,014.08 × 728.07
  4. Step 4: Simplify right side
    2,675.91x = 2,922,527.59
  5. Step 5: Solve for x
    x = 2,922,527.59/2,675.91
  6. Step 6: Final answer
    x = 1,092.16

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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.