Home / 7,739.82-11,610.63-2,811.78

Finding the Fourth Proportional to 7,739.82, 11,610.63 and 2,811.78

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Solution

The fourth proportional to 7,739.82, 11,610.63 and 2,811.78 is: 4,218.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.82 : 11,610.63 = 2,811.78 : x
  2. Step 2: Convert to fraction form
    7,739.82/11,610.63 = 2,811.78/x
  3. Step 3: Cross multiply
    7,739.82x = 11,610.63 × 2,811.78
  4. Step 4: Simplify right side
    7,739.82x = 32,646,537.22
  5. Step 5: Solve for x
    x = 32,646,537.22/7,739.82
  6. Step 6: Final answer
    x = 4,218.00

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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.