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Finding the Fourth Proportional to 3,080.67, 4,619.64 and 1,910.63

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Solution

The fourth proportional to 3,080.67, 4,619.64 and 1,910.63 is: 2,865.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.67 : 4,619.64 = 1,910.63 : x
  2. Step 2: Convert to fraction form
    3,080.67/4,619.64 = 1,910.63/x
  3. Step 3: Cross multiply
    3,080.67x = 4,619.64 × 1,910.63
  4. Step 4: Simplify right side
    3,080.67x = 8,826,416.00
  5. Step 5: Solve for x
    x = 8,826,416.00/3,080.67
  6. Step 6: Final answer
    x = 2,865.09

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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.