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Finding the Fourth Proportional to 9,319.20, 13,978.77 and 2,745.37

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Solution

The fourth proportional to 9,319.20, 13,978.77 and 2,745.37 is: 4,118.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.20 : 13,978.77 = 2,745.37 : x
  2. Step 2: Convert to fraction form
    9,319.20/13,978.77 = 2,745.37/x
  3. Step 3: Cross multiply
    9,319.20x = 13,978.77 × 2,745.37
  4. Step 4: Simplify right side
    9,319.20x = 38,376,895.79
  5. Step 5: Solve for x
    x = 38,376,895.79/9,319.20
  6. Step 6: Final answer
    x = 4,118.05

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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.