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Finding the Fourth Proportional to 2,750.22, 4,125.12 and 775.77

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Solution

The fourth proportional to 2,750.22, 4,125.12 and 775.77 is: 1,163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.22 : 4,125.12 = 775.77 : x
  2. Step 2: Convert to fraction form
    2,750.22/4,125.12 = 775.77/x
  3. Step 3: Cross multiply
    2,750.22x = 4,125.12 × 775.77
  4. Step 4: Simplify right side
    2,750.22x = 3,200,146.59
  5. Step 5: Solve for x
    x = 3,200,146.59/2,750.22
  6. Step 6: Final answer
    x = 1,163.60

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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.