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Finding the Fourth Proportional to 6,479.88, 8,942.04 and 3,647.42

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Solution

The fourth proportional to 6,479.88, 8,942.04 and 3,647.42 is: 5,033.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.88 : 8,942.04 = 3,647.42 : x
  2. Step 2: Convert to fraction form
    6,479.88/8,942.04 = 3,647.42/x
  3. Step 3: Cross multiply
    6,479.88x = 8,942.04 × 3,647.42
  4. Step 4: Simplify right side
    6,479.88x = 32,615,330.83
  5. Step 5: Solve for x
    x = 32,615,330.83/6,479.88
  6. Step 6: Final answer
    x = 5,033.32

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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.