Home / 2,639.94-3,951.40-1,817.79

Finding the Fourth Proportional to 2,639.94, 3,951.40 and 1,817.79

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Solution

The fourth proportional to 2,639.94, 3,951.40 and 1,817.79 is: 2,720.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.94 : 3,951.40 = 1,817.79 : x
  2. Step 2: Convert to fraction form
    2,639.94/3,951.40 = 1,817.79/x
  3. Step 3: Cross multiply
    2,639.94x = 3,951.40 × 1,817.79
  4. Step 4: Simplify right side
    2,639.94x = 7,182,815.41
  5. Step 5: Solve for x
    x = 7,182,815.41/2,639.94
  6. Step 6: Final answer
    x = 2,720.83

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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.