Home / 7,739.79-11,614.30-2,809.81

Finding the Fourth Proportional to 7,739.79, 11,614.30 and 2,809.81

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Solution

The fourth proportional to 7,739.79, 11,614.30 and 2,809.81 is: 4,216.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.79 : 11,614.30 = 2,809.81 : x
  2. Step 2: Convert to fraction form
    7,739.79/11,614.30 = 2,809.81/x
  3. Step 3: Cross multiply
    7,739.79x = 11,614.30 × 2,809.81
  4. Step 4: Simplify right side
    7,739.79x = 32,633,976.28
  5. Step 5: Solve for x
    x = 32,633,976.28/7,739.79
  6. Step 6: Final answer
    x = 4,216.39

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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.