Home / 7,826.12-11,739.20-2,279.60

Finding the Fourth Proportional to 7,826.12, 11,739.20 and 2,279.60

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Solution

The fourth proportional to 7,826.12, 11,739.20 and 2,279.60 is: 3,419.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,826.12 : 11,739.20 = 2,279.60 : x
  2. Step 2: Convert to fraction form
    7,826.12/11,739.20 = 2,279.60/x
  3. Step 3: Cross multiply
    7,826.12x = 11,739.20 × 2,279.60
  4. Step 4: Simplify right side
    7,826.12x = 26,760,715.37
  5. Step 5: Solve for x
    x = 26,760,715.37/7,826.12
  6. Step 6: Final answer
    x = 3,419.41

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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.