Home / 3,893.40-5,839.90-1,812.65

Finding the Fourth Proportional to 3,893.40, 5,839.90 and 1,812.65

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Solution

The fourth proportional to 3,893.40, 5,839.90 and 1,812.65 is: 2,718.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.40 : 5,839.90 = 1,812.65 : x
  2. Step 2: Convert to fraction form
    3,893.40/5,839.90 = 1,812.65/x
  3. Step 3: Cross multiply
    3,893.40x = 5,839.90 × 1,812.65
  4. Step 4: Simplify right side
    3,893.40x = 10,585,661.00
  5. Step 5: Solve for x
    x = 10,585,661.00/3,893.40
  6. Step 6: Final answer
    x = 2,718.87

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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.