Home / 2,717.81-4,078.01-1,330.39

Finding the Fourth Proportional to 2,717.81, 4,078.01 and 1,330.39

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Solution

The fourth proportional to 2,717.81, 4,078.01 and 1,330.39 is: 1,996.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.81 : 4,078.01 = 1,330.39 : x
  2. Step 2: Convert to fraction form
    2,717.81/4,078.01 = 1,330.39/x
  3. Step 3: Cross multiply
    2,717.81x = 4,078.01 × 1,330.39
  4. Step 4: Simplify right side
    2,717.81x = 5,425,321.73
  5. Step 5: Solve for x
    x = 5,425,321.73/2,717.81
  6. Step 6: Final answer
    x = 1,996.21

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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.