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Finding the Fourth Proportional to 3,985.22, 5,979.02 and 1,612.08

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Solution

The fourth proportional to 3,985.22, 5,979.02 and 1,612.08 is: 2,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.22 : 5,979.02 = 1,612.08 : x
  2. Step 2: Convert to fraction form
    3,985.22/5,979.02 = 1,612.08/x
  3. Step 3: Cross multiply
    3,985.22x = 5,979.02 × 1,612.08
  4. Step 4: Simplify right side
    3,985.22x = 9,638,658.56
  5. Step 5: Solve for x
    x = 9,638,658.56/3,985.22
  6. Step 6: Final answer
    x = 2,418.60

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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.