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Finding the Fourth Proportional to 3,266.79, 4,509.60 and 1,940.91

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Solution

The fourth proportional to 3,266.79, 4,509.60 and 1,940.91 is: 2,679.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,266.79 : 4,509.60 = 1,940.91 : x
  2. Step 2: Convert to fraction form
    3,266.79/4,509.60 = 1,940.91/x
  3. Step 3: Cross multiply
    3,266.79x = 4,509.60 × 1,940.91
  4. Step 4: Simplify right side
    3,266.79x = 8,752,727.74
  5. Step 5: Solve for x
    x = 8,752,727.74/3,266.79
  6. Step 6: Final answer
    x = 2,679.31

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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.