Home / 7,620.46-11,429.47-2,689.38

Finding the Fourth Proportional to 7,620.46, 11,429.47 and 2,689.38

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Solution

The fourth proportional to 7,620.46, 11,429.47 and 2,689.38 is: 4,033.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.46 : 11,429.47 = 2,689.38 : x
  2. Step 2: Convert to fraction form
    7,620.46/11,429.47 = 2,689.38/x
  3. Step 3: Cross multiply
    7,620.46x = 11,429.47 × 2,689.38
  4. Step 4: Simplify right side
    7,620.46x = 30,738,188.03
  5. Step 5: Solve for x
    x = 30,738,188.03/7,620.46
  6. Step 6: Final answer
    x = 4,033.64

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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.