Home / 2,319.75-3,201.27-1,388.25

Finding the Fourth Proportional to 2,319.75, 3,201.27 and 1,388.25

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Solution

The fourth proportional to 2,319.75, 3,201.27 and 1,388.25 is: 1,915.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.75 : 3,201.27 = 1,388.25 : x
  2. Step 2: Convert to fraction form
    2,319.75/3,201.27 = 1,388.25/x
  3. Step 3: Cross multiply
    2,319.75x = 3,201.27 × 1,388.25
  4. Step 4: Simplify right side
    2,319.75x = 4,444,163.08
  5. Step 5: Solve for x
    x = 4,444,163.08/2,319.75
  6. Step 6: Final answer
    x = 1,915.79

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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.