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Finding the Fourth Proportional to 4,991.48, 6,890.46 and 3,223.95

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Solution

The fourth proportional to 4,991.48, 6,890.46 and 3,223.95 is: 4,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.48 : 6,890.46 = 3,223.95 : x
  2. Step 2: Convert to fraction form
    4,991.48/6,890.46 = 3,223.95/x
  3. Step 3: Cross multiply
    4,991.48x = 6,890.46 × 3,223.95
  4. Step 4: Simplify right side
    4,991.48x = 22,214,490.46
  5. Step 5: Solve for x
    x = 22,214,490.46/4,991.48
  6. Step 6: Final answer
    x = 4,450.48

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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.