Home / 8,739.12-13,108.44-2,165.28

Finding the Fourth Proportional to 8,739.12, 13,108.44 and 2,165.28

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Solution

The fourth proportional to 8,739.12, 13,108.44 and 2,165.28 is: 3,247.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.12 : 13,108.44 = 2,165.28 : x
  2. Step 2: Convert to fraction form
    8,739.12/13,108.44 = 2,165.28/x
  3. Step 3: Cross multiply
    8,739.12x = 13,108.44 × 2,165.28
  4. Step 4: Simplify right side
    8,739.12x = 28,383,442.96
  5. Step 5: Solve for x
    x = 28,383,442.96/8,739.12
  6. Step 6: Final answer
    x = 3,247.86

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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.