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Finding the Fourth Proportional to 2,718.80, 4,080.90 and 1,333.70

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Solution

The fourth proportional to 2,718.80, 4,080.90 and 1,333.70 is: 2,001.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.80 : 4,080.90 = 1,333.70 : x
  2. Step 2: Convert to fraction form
    2,718.80/4,080.90 = 1,333.70/x
  3. Step 3: Cross multiply
    2,718.80x = 4,080.90 × 1,333.70
  4. Step 4: Simplify right side
    2,718.80x = 5,442,696.33
  5. Step 5: Solve for x
    x = 5,442,696.33/2,718.80
  6. Step 6: Final answer
    x = 2,001.87

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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.