Home / 7,945.20-11,913.96-4,659.36

Finding the Fourth Proportional to 7,945.20, 11,913.96 and 4,659.36

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Solution

The fourth proportional to 7,945.20, 11,913.96 and 4,659.36 is: 6,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.20 : 11,913.96 = 4,659.36 : x
  2. Step 2: Convert to fraction form
    7,945.20/11,913.96 = 4,659.36/x
  3. Step 3: Cross multiply
    7,945.20x = 11,913.96 × 4,659.36
  4. Step 4: Simplify right side
    7,945.20x = 55,511,428.67
  5. Step 5: Solve for x
    x = 55,511,428.67/7,945.20
  6. Step 6: Final answer
    x = 6,986.79

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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.