Home / 5,081.75-7,619.89-1,962.55

Finding the Fourth Proportional to 5,081.75, 7,619.89 and 1,962.55

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Solution

The fourth proportional to 5,081.75, 7,619.89 and 1,962.55 is: 2,942.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.75 : 7,619.89 = 1,962.55 : x
  2. Step 2: Convert to fraction form
    5,081.75/7,619.89 = 1,962.55/x
  3. Step 3: Cross multiply
    5,081.75x = 7,619.89 × 1,962.55
  4. Step 4: Simplify right side
    5,081.75x = 14,954,415.12
  5. Step 5: Solve for x
    x = 14,954,415.12/5,081.75
  6. Step 6: Final answer
    x = 2,942.77

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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.