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Finding the Fourth Proportional to 2,595, 3,891.34 and 745.69

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Solution

The fourth proportional to 2,595, 3,891.34 and 745.69 is: 1,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,595 : 3,891.34 = 745.69 : x
  2. Step 2: Convert to fraction form
    2,595/3,891.34 = 745.69/x
  3. Step 3: Cross multiply
    2,595x = 3,891.34 × 745.69
  4. Step 4: Simplify right side
    2,595x = 2,901,733.32
  5. Step 5: Solve for x
    x = 2,901,733.32/2,595
  6. Step 6: Final answer
    x = 1,118.20

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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.