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Finding the Fourth Proportional to 3,491.28, 4,818.02 and 1,919.41

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Solution

The fourth proportional to 3,491.28, 4,818.02 and 1,919.41 is: 2,648.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.28 : 4,818.02 = 1,919.41 : x
  2. Step 2: Convert to fraction form
    3,491.28/4,818.02 = 1,919.41/x
  3. Step 3: Cross multiply
    3,491.28x = 4,818.02 × 1,919.41
  4. Step 4: Simplify right side
    3,491.28x = 9,247,734.13
  5. Step 5: Solve for x
    x = 9,247,734.13/3,491.28
  6. Step 6: Final answer
    x = 2,648.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.