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Finding the Fourth Proportional to 3,519.56, 5,280.08 and 1,328.24

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Solution

The fourth proportional to 3,519.56, 5,280.08 and 1,328.24 is: 1,992.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.56 : 5,280.08 = 1,328.24 : x
  2. Step 2: Convert to fraction form
    3,519.56/5,280.08 = 1,328.24/x
  3. Step 3: Cross multiply
    3,519.56x = 5,280.08 × 1,328.24
  4. Step 4: Simplify right side
    3,519.56x = 7,013,180.42
  5. Step 5: Solve for x
    x = 7,013,180.42/3,519.56
  6. Step 6: Final answer
    x = 1,992.63

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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.