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Finding the Fourth Proportional to 3,137.66, 4,330 and 1,959.41

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Solution

The fourth proportional to 3,137.66, 4,330 and 1,959.41 is: 2,704.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.66 : 4,330 = 1,959.41 : x
  2. Step 2: Convert to fraction form
    3,137.66/4,330 = 1,959.41/x
  3. Step 3: Cross multiply
    3,137.66x = 4,330 × 1,959.41
  4. Step 4: Simplify right side
    3,137.66x = 8,484,245.30
  5. Step 5: Solve for x
    x = 8,484,245.30/3,137.66
  6. Step 6: Final answer
    x = 2,704.01

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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.