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Finding the Fourth Proportional to 2,163.80, 3,245.74 and 702.94

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Solution

The fourth proportional to 2,163.80, 3,245.74 and 702.94 is: 1,054.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.80 : 3,245.74 = 702.94 : x
  2. Step 2: Convert to fraction form
    2,163.80/3,245.74 = 702.94/x
  3. Step 3: Cross multiply
    2,163.80x = 3,245.74 × 702.94
  4. Step 4: Simplify right side
    2,163.80x = 2,281,560.48
  5. Step 5: Solve for x
    x = 2,281,560.48/2,163.80
  6. Step 6: Final answer
    x = 1,054.42

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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.