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Finding the Fourth Proportional to 3,491.44, 4,818.48 and 1,919.86

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Solution

The fourth proportional to 3,491.44, 4,818.48 and 1,919.86 is: 2,649.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.44 : 4,818.48 = 1,919.86 : x
  2. Step 2: Convert to fraction form
    3,491.44/4,818.48 = 1,919.86/x
  3. Step 3: Cross multiply
    3,491.44x = 4,818.48 × 1,919.86
  4. Step 4: Simplify right side
    3,491.44x = 9,250,807.01
  5. Step 5: Solve for x
    x = 9,250,807.01/3,491.44
  6. Step 6: Final answer
    x = 2,649.57

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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.