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Finding the Fourth Proportional to 3,323.16, 4,983.62 and 1,678.66

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Solution

The fourth proportional to 3,323.16, 4,983.62 and 1,678.66 is: 2,517.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,323.16 : 4,983.62 = 1,678.66 : x
  2. Step 2: Convert to fraction form
    3,323.16/4,983.62 = 1,678.66/x
  3. Step 3: Cross multiply
    3,323.16x = 4,983.62 × 1,678.66
  4. Step 4: Simplify right side
    3,323.16x = 8,365,803.55
  5. Step 5: Solve for x
    x = 8,365,803.55/3,323.16
  6. Step 6: Final answer
    x = 2,517.42

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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.