Home / 2,685.96-4,028.42-1,125.54

Finding the Fourth Proportional to 2,685.96, 4,028.42 and 1,125.54

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Solution

The fourth proportional to 2,685.96, 4,028.42 and 1,125.54 is: 1,688.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.96 : 4,028.42 = 1,125.54 : x
  2. Step 2: Convert to fraction form
    2,685.96/4,028.42 = 1,125.54/x
  3. Step 3: Cross multiply
    2,685.96x = 4,028.42 × 1,125.54
  4. Step 4: Simplify right side
    2,685.96x = 4,534,150.66
  5. Step 5: Solve for x
    x = 4,534,150.66/2,685.96
  6. Step 6: Final answer
    x = 1,688.09

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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.