Home / 2,631.64-3,631.74-1,512.80

Finding the Fourth Proportional to 2,631.64, 3,631.74 and 1,512.80

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Solution

The fourth proportional to 2,631.64, 3,631.74 and 1,512.80 is: 2,087.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.64 : 3,631.74 = 1,512.80 : x
  2. Step 2: Convert to fraction form
    2,631.64/3,631.74 = 1,512.80/x
  3. Step 3: Cross multiply
    2,631.64x = 3,631.74 × 1,512.80
  4. Step 4: Simplify right side
    2,631.64x = 5,494,105.35
  5. Step 5: Solve for x
    x = 5,494,105.35/2,631.64
  6. Step 6: Final answer
    x = 2,087.71

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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.