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Finding the Fourth Proportional to 3,315.33, 4,974.01 and 1,855.51

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Solution

The fourth proportional to 3,315.33, 4,974.01 and 1,855.51 is: 2,783.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.33 : 4,974.01 = 1,855.51 : x
  2. Step 2: Convert to fraction form
    3,315.33/4,974.01 = 1,855.51/x
  3. Step 3: Cross multiply
    3,315.33x = 4,974.01 × 1,855.51
  4. Step 4: Simplify right side
    3,315.33x = 9,229,308.22
  5. Step 5: Solve for x
    x = 9,229,308.22/3,315.33
  6. Step 6: Final answer
    x = 2,783.83

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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.