Home / 7,945.68-11,909.46-3,779.79

Finding the Fourth Proportional to 7,945.68, 11,909.46 and 3,779.79

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Solution

The fourth proportional to 7,945.68, 11,909.46 and 3,779.79 is: 5,665.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.68 : 11,909.46 = 3,779.79 : x
  2. Step 2: Convert to fraction form
    7,945.68/11,909.46 = 3,779.79/x
  3. Step 3: Cross multiply
    7,945.68x = 11,909.46 × 3,779.79
  4. Step 4: Simplify right side
    7,945.68x = 45,015,257.81
  5. Step 5: Solve for x
    x = 45,015,257.81/7,945.68
  6. Step 6: Final answer
    x = 5,665.38

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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.