Home / 3,813.93-5,718.78-2,147.38

Finding the Fourth Proportional to 3,813.93, 5,718.78 and 2,147.38

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Solution

The fourth proportional to 3,813.93, 5,718.78 and 2,147.38 is: 3,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.93 : 5,718.78 = 2,147.38 : x
  2. Step 2: Convert to fraction form
    3,813.93/5,718.78 = 2,147.38/x
  3. Step 3: Cross multiply
    3,813.93x = 5,718.78 × 2,147.38
  4. Step 4: Simplify right side
    3,813.93x = 12,280,393.80
  5. Step 5: Solve for x
    x = 12,280,393.80/3,813.93
  6. Step 6: Final answer
    x = 3,219.88

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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.