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Finding the Fourth Proportional to 3,979, 5,491.02 and 2,408.32

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Solution

The fourth proportional to 3,979, 5,491.02 and 2,408.32 is: 3,323.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979 : 5,491.02 = 2,408.32 : x
  2. Step 2: Convert to fraction form
    3,979/5,491.02 = 2,408.32/x
  3. Step 3: Cross multiply
    3,979x = 5,491.02 × 2,408.32
  4. Step 4: Simplify right side
    3,979x = 13,224,133.29
  5. Step 5: Solve for x
    x = 13,224,133.29/3,979
  6. Step 6: Final answer
    x = 3,323.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.