Home / 3,453.44-5,180-1,720.64

Finding the Fourth Proportional to 3,453.44, 5,180 and 1,720.64

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Solution

The fourth proportional to 3,453.44, 5,180 and 1,720.64 is: 2,580.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.44 : 5,180 = 1,720.64 : x
  2. Step 2: Convert to fraction form
    3,453.44/5,180 = 1,720.64/x
  3. Step 3: Cross multiply
    3,453.44x = 5,180 × 1,720.64
  4. Step 4: Simplify right side
    3,453.44x = 8,912,915.20
  5. Step 5: Solve for x
    x = 8,912,915.20/3,453.44
  6. Step 6: Final answer
    x = 2,580.88

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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.