Home / 3,984.84-5,977.23-1,387.75

Finding the Fourth Proportional to 3,984.84, 5,977.23 and 1,387.75

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Solution

The fourth proportional to 3,984.84, 5,977.23 and 1,387.75 is: 2,081.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.84 : 5,977.23 = 1,387.75 : x
  2. Step 2: Convert to fraction form
    3,984.84/5,977.23 = 1,387.75/x
  3. Step 3: Cross multiply
    3,984.84x = 5,977.23 × 1,387.75
  4. Step 4: Simplify right side
    3,984.84x = 8,294,900.93
  5. Step 5: Solve for x
    x = 8,294,900.93/3,984.84
  6. Step 6: Final answer
    x = 2,081.61

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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.