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Finding the Fourth Proportional to 4,806.80, 7,210.20 and 2,951.90

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Solution

The fourth proportional to 4,806.80, 7,210.20 and 2,951.90 is: 4,427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,806.80 : 7,210.20 = 2,951.90 : x
  2. Step 2: Convert to fraction form
    4,806.80/7,210.20 = 2,951.90/x
  3. Step 3: Cross multiply
    4,806.80x = 7,210.20 × 2,951.90
  4. Step 4: Simplify right side
    4,806.80x = 21,283,789.38
  5. Step 5: Solve for x
    x = 21,283,789.38/4,806.80
  6. Step 6: Final answer
    x = 4,427.85

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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.