Home / 7,571.78-11,355.91-2,890.07

Finding the Fourth Proportional to 7,571.78, 11,355.91 and 2,890.07

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Solution

The fourth proportional to 7,571.78, 11,355.91 and 2,890.07 is: 4,334.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,571.78 : 11,355.91 = 2,890.07 : x
  2. Step 2: Convert to fraction form
    7,571.78/11,355.91 = 2,890.07/x
  3. Step 3: Cross multiply
    7,571.78x = 11,355.91 × 2,890.07
  4. Step 4: Simplify right side
    7,571.78x = 32,819,395.98
  5. Step 5: Solve for x
    x = 32,819,395.98/7,571.78
  6. Step 6: Final answer
    x = 4,334.43

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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.