Home / 3,855.90-5,784.76-1,664.65

Finding the Fourth Proportional to 3,855.90, 5,784.76 and 1,664.65

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Solution

The fourth proportional to 3,855.90, 5,784.76 and 1,664.65 is: 2,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.90 : 5,784.76 = 1,664.65 : x
  2. Step 2: Convert to fraction form
    3,855.90/5,784.76 = 1,664.65/x
  3. Step 3: Cross multiply
    3,855.90x = 5,784.76 × 1,664.65
  4. Step 4: Simplify right side
    3,855.90x = 9,629,571.81
  5. Step 5: Solve for x
    x = 9,629,571.81/3,855.90
  6. Step 6: Final answer
    x = 2,497.36

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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.