Home / 3,979.80-5,968.08-1,787.94

Finding the Fourth Proportional to 3,979.80, 5,968.08 and 1,787.94

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Solution

The fourth proportional to 3,979.80, 5,968.08 and 1,787.94 is: 2,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.80 : 5,968.08 = 1,787.94 : x
  2. Step 2: Convert to fraction form
    3,979.80/5,968.08 = 1,787.94/x
  3. Step 3: Cross multiply
    3,979.80x = 5,968.08 × 1,787.94
  4. Step 4: Simplify right side
    3,979.80x = 10,670,568.96
  5. Step 5: Solve for x
    x = 10,670,568.96/3,979.80
  6. Step 6: Final answer
    x = 2,681.18

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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.