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Finding the Fourth Proportional to 4,808, 6,636.66 and 2,945

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Solution

The fourth proportional to 4,808, 6,636.66 and 2,945 is: 4,065.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,808 : 6,636.66 = 2,945 : x
  2. Step 2: Convert to fraction form
    4,808/6,636.66 = 2,945/x
  3. Step 3: Cross multiply
    4,808x = 6,636.66 × 2,945
  4. Step 4: Simplify right side
    4,808x = 19,544,963.70
  5. Step 5: Solve for x
    x = 19,544,963.70/4,808
  6. Step 6: Final answer
    x = 4,065.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.