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Finding the Fourth Proportional to 3,280.74, 4,922.03 and 1,820.91

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Solution

The fourth proportional to 3,280.74, 4,922.03 and 1,820.91 is: 2,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.74 : 4,922.03 = 1,820.91 : x
  2. Step 2: Convert to fraction form
    3,280.74/4,922.03 = 1,820.91/x
  3. Step 3: Cross multiply
    3,280.74x = 4,922.03 × 1,820.91
  4. Step 4: Simplify right side
    3,280.74x = 8,962,596.66
  5. Step 5: Solve for x
    x = 8,962,596.66/3,280.74
  6. Step 6: Final answer
    x = 2,731.89

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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.