Home / 7,620.72-11,429.90-2,940.05

Finding the Fourth Proportional to 7,620.72, 11,429.90 and 2,940.05

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Solution

The fourth proportional to 7,620.72, 11,429.90 and 2,940.05 is: 4,409.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.72 : 11,429.90 = 2,940.05 : x
  2. Step 2: Convert to fraction form
    7,620.72/11,429.90 = 2,940.05/x
  3. Step 3: Cross multiply
    7,620.72x = 11,429.90 × 2,940.05
  4. Step 4: Simplify right side
    7,620.72x = 33,604,416.67
  5. Step 5: Solve for x
    x = 33,604,416.67/7,620.72
  6. Step 6: Final answer
    x = 4,409.61

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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.