Home / 2,825.68-4,238.88-1,438.54

Finding the Fourth Proportional to 2,825.68, 4,238.88 and 1,438.54

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Solution

The fourth proportional to 2,825.68, 4,238.88 and 1,438.54 is: 2,157.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.68 : 4,238.88 = 1,438.54 : x
  2. Step 2: Convert to fraction form
    2,825.68/4,238.88 = 1,438.54/x
  3. Step 3: Cross multiply
    2,825.68x = 4,238.88 × 1,438.54
  4. Step 4: Simplify right side
    2,825.68x = 6,097,798.44
  5. Step 5: Solve for x
    x = 6,097,798.44/2,825.68
  6. Step 6: Final answer
    x = 2,157.99

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1.5x scale

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.