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Finding the Fourth Proportional to 2,991.03, 4,482.44 and 1,821.44

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Solution

The fourth proportional to 2,991.03, 4,482.44 and 1,821.44 is: 2,729.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.03 : 4,482.44 = 1,821.44 : x
  2. Step 2: Convert to fraction form
    2,991.03/4,482.44 = 1,821.44/x
  3. Step 3: Cross multiply
    2,991.03x = 4,482.44 × 1,821.44
  4. Step 4: Simplify right side
    2,991.03x = 8,164,479.23
  5. Step 5: Solve for x
    x = 8,164,479.23/2,991.03
  6. Step 6: Final answer
    x = 2,729.66

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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.