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Finding the Fourth Proportional to 3,321.98, 4,984.32 and 1,763.74

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Solution

The fourth proportional to 3,321.98, 4,984.32 and 1,763.74 is: 2,646.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.98 : 4,984.32 = 1,763.74 : x
  2. Step 2: Convert to fraction form
    3,321.98/4,984.32 = 1,763.74/x
  3. Step 3: Cross multiply
    3,321.98x = 4,984.32 × 1,763.74
  4. Step 4: Simplify right side
    3,321.98x = 8,791,044.56
  5. Step 5: Solve for x
    x = 8,791,044.56/3,321.98
  6. Step 6: Final answer
    x = 2,646.33

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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.