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Finding the Fourth Proportional to 5,266.72, 7,902.24 and 3,186.64

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Solution

The fourth proportional to 5,266.72, 7,902.24 and 3,186.64 is: 4,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266.72 : 7,902.24 = 3,186.64 : x
  2. Step 2: Convert to fraction form
    5,266.72/7,902.24 = 3,186.64/x
  3. Step 3: Cross multiply
    5,266.72x = 7,902.24 × 3,186.64
  4. Step 4: Simplify right side
    5,266.72x = 25,181,594.07
  5. Step 5: Solve for x
    x = 25,181,594.07/5,266.72
  6. Step 6: Final answer
    x = 4,781.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.