Home / 7,857.78-11,782.86-4,571.88

Finding the Fourth Proportional to 7,857.78, 11,782.86 and 4,571.88

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Solution

The fourth proportional to 7,857.78, 11,782.86 and 4,571.88 is: 6,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.78 : 11,782.86 = 4,571.88 : x
  2. Step 2: Convert to fraction form
    7,857.78/11,782.86 = 4,571.88/x
  3. Step 3: Cross multiply
    7,857.78x = 11,782.86 × 4,571.88
  4. Step 4: Simplify right side
    7,857.78x = 53,869,821.98
  5. Step 5: Solve for x
    x = 53,869,821.98/7,857.78
  6. Step 6: Final answer
    x = 6,855.60

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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.