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Finding the Fourth Proportional to 6,257, 9,388.74 and 3,179

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Solution

The fourth proportional to 6,257, 9,388.74 and 3,179 is: 4,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,257 : 9,388.74 = 3,179 : x
  2. Step 2: Convert to fraction form
    6,257/9,388.74 = 3,179/x
  3. Step 3: Cross multiply
    6,257x = 9,388.74 × 3,179
  4. Step 4: Simplify right side
    6,257x = 29,846,804.46
  5. Step 5: Solve for x
    x = 29,846,804.46/6,257
  6. Step 6: Final answer
    x = 4,770.15

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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.