Home / 3,626.78-5,440.50-1,286.55

Finding the Fourth Proportional to 3,626.78, 5,440.50 and 1,286.55

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Solution

The fourth proportional to 3,626.78, 5,440.50 and 1,286.55 is: 1,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,626.78 : 5,440.50 = 1,286.55 : x
  2. Step 2: Convert to fraction form
    3,626.78/5,440.50 = 1,286.55/x
  3. Step 3: Cross multiply
    3,626.78x = 5,440.50 × 1,286.55
  4. Step 4: Simplify right side
    3,626.78x = 6,999,475.28
  5. Step 5: Solve for x
    x = 6,999,475.28/3,626.78
  6. Step 6: Final answer
    x = 1,929.94

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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.