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Finding the Fourth Proportional to 7,479, 11,217.06 and 2,548.60

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Solution

The fourth proportional to 7,479, 11,217.06 and 2,548.60 is: 3,822.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479 : 11,217.06 = 2,548.60 : x
  2. Step 2: Convert to fraction form
    7,479/11,217.06 = 2,548.60/x
  3. Step 3: Cross multiply
    7,479x = 11,217.06 × 2,548.60
  4. Step 4: Simplify right side
    7,479x = 28,587,799.12
  5. Step 5: Solve for x
    x = 28,587,799.12/7,479
  6. Step 6: Final answer
    x = 3,822.41

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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.