Home / 3,438.90-4,738.64-2,843.55

Finding the Fourth Proportional to 3,438.90, 4,738.64 and 2,843.55

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Solution

The fourth proportional to 3,438.90, 4,738.64 and 2,843.55 is: 3,918.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.90 : 4,738.64 = 2,843.55 : x
  2. Step 2: Convert to fraction form
    3,438.90/4,738.64 = 2,843.55/x
  3. Step 3: Cross multiply
    3,438.90x = 4,738.64 × 2,843.55
  4. Step 4: Simplify right side
    3,438.90x = 13,474,545.55
  5. Step 5: Solve for x
    x = 13,474,545.55/3,438.90
  6. Step 6: Final answer
    x = 3,918.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.