Home / 1,286.26-1,925.73-1,078.49

Finding the Fourth Proportional to 1,286.26, 1,925.73 and 1,078.49

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Solution

The fourth proportional to 1,286.26, 1,925.73 and 1,078.49 is: 1,614.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.26 : 1,925.73 = 1,078.49 : x
  2. Step 2: Convert to fraction form
    1,286.26/1,925.73 = 1,078.49/x
  3. Step 3: Cross multiply
    1,286.26x = 1,925.73 × 1,078.49
  4. Step 4: Simplify right side
    1,286.26x = 2,076,880.55
  5. Step 5: Solve for x
    x = 2,076,880.55/1,286.26
  6. Step 6: Final answer
    x = 1,614.67

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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.