Home / 7,629.69-11,439.93-3,678.51

Finding the Fourth Proportional to 7,629.69, 11,439.93 and 3,678.51

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Solution

The fourth proportional to 7,629.69, 11,439.93 and 3,678.51 is: 5,515.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,629.69 : 11,439.93 = 3,678.51 : x
  2. Step 2: Convert to fraction form
    7,629.69/11,439.93 = 3,678.51/x
  3. Step 3: Cross multiply
    7,629.69x = 11,439.93 × 3,678.51
  4. Step 4: Simplify right side
    7,629.69x = 42,081,896.90
  5. Step 5: Solve for x
    x = 42,081,896.90/7,629.69
  6. Step 6: Final answer
    x = 5,515.54

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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.