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Finding the Fourth Proportional to 2,994.40, 4,491.60 and 2,629.90

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Solution

The fourth proportional to 2,994.40, 4,491.60 and 2,629.90 is: 3,944.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,994.40 : 4,491.60 = 2,629.90 : x
  2. Step 2: Convert to fraction form
    2,994.40/4,491.60 = 2,629.90/x
  3. Step 3: Cross multiply
    2,994.40x = 4,491.60 × 2,629.90
  4. Step 4: Simplify right side
    2,994.40x = 11,812,458.84
  5. Step 5: Solve for x
    x = 11,812,458.84/2,994.40
  6. Step 6: Final answer
    x = 3,944.85

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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.