Home / 3,819.84-5,728.80-1,222.08

Finding the Fourth Proportional to 3,819.84, 5,728.80 and 1,222.08

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Solution

The fourth proportional to 3,819.84, 5,728.80 and 1,222.08 is: 1,832.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.84 : 5,728.80 = 1,222.08 : x
  2. Step 2: Convert to fraction form
    3,819.84/5,728.80 = 1,222.08/x
  3. Step 3: Cross multiply
    3,819.84x = 5,728.80 × 1,222.08
  4. Step 4: Simplify right side
    3,819.84x = 7,001,051.90
  5. Step 5: Solve for x
    x = 7,001,051.90/3,819.84
  6. Step 6: Final answer
    x = 1,832.81

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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.