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Finding the Fourth Proportional to 2,677.15, 4,015.41 and 728.89

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Solution

The fourth proportional to 2,677.15, 4,015.41 and 728.89 is: 1,093.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,677.15 : 4,015.41 = 728.89 : x
  2. Step 2: Convert to fraction form
    2,677.15/4,015.41 = 728.89/x
  3. Step 3: Cross multiply
    2,677.15x = 4,015.41 × 728.89
  4. Step 4: Simplify right side
    2,677.15x = 2,926,792.19
  5. Step 5: Solve for x
    x = 2,926,792.19/2,677.15
  6. Step 6: Final answer
    x = 1,093.25

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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.