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Finding the Fourth Proportional to 6,620.58, 9,930.87 and 2,238.05

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Solution

The fourth proportional to 6,620.58, 9,930.87 and 2,238.05 is: 3,357.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.58 : 9,930.87 = 2,238.05 : x
  2. Step 2: Convert to fraction form
    6,620.58/9,930.87 = 2,238.05/x
  3. Step 3: Cross multiply
    6,620.58x = 9,930.87 × 2,238.05
  4. Step 4: Simplify right side
    6,620.58x = 22,225,733.95
  5. Step 5: Solve for x
    x = 22,225,733.95/6,620.58
  6. Step 6: Final answer
    x = 3,357.07

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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.