Home / 7,628.80-11,445.52-3,629.22

Finding the Fourth Proportional to 7,628.80, 11,445.52 and 3,629.22

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Solution

The fourth proportional to 7,628.80, 11,445.52 and 3,629.22 is: 5,444.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,628.80 : 11,445.52 = 3,629.22 : x
  2. Step 2: Convert to fraction form
    7,628.80/11,445.52 = 3,629.22/x
  3. Step 3: Cross multiply
    7,628.80x = 11,445.52 × 3,629.22
  4. Step 4: Simplify right side
    7,628.80x = 41,538,310.09
  5. Step 5: Solve for x
    x = 41,538,310.09/7,628.80
  6. Step 6: Final answer
    x = 5,444.93

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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.