Home / 2,124.68-3,185.34-1,028.75

Finding the Fourth Proportional to 2,124.68, 3,185.34 and 1,028.75

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Solution

The fourth proportional to 2,124.68, 3,185.34 and 1,028.75 is: 1,542.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.68 : 3,185.34 = 1,028.75 : x
  2. Step 2: Convert to fraction form
    2,124.68/3,185.34 = 1,028.75/x
  3. Step 3: Cross multiply
    2,124.68x = 3,185.34 × 1,028.75
  4. Step 4: Simplify right side
    2,124.68x = 3,276,902.60
  5. Step 5: Solve for x
    x = 3,276,902.60/2,124.68
  6. Step 6: Final answer
    x = 1,542.31

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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.