Home / 2,682.55-4,025.19-1,278.55

Finding the Fourth Proportional to 2,682.55, 4,025.19 and 1,278.55

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Solution

The fourth proportional to 2,682.55, 4,025.19 and 1,278.55 is: 1,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,682.55 : 4,025.19 = 1,278.55 : x
  2. Step 2: Convert to fraction form
    2,682.55/4,025.19 = 1,278.55/x
  3. Step 3: Cross multiply
    2,682.55x = 4,025.19 × 1,278.55
  4. Step 4: Simplify right side
    2,682.55x = 5,146,406.67
  5. Step 5: Solve for x
    x = 5,146,406.67/2,682.55
  6. Step 6: Final answer
    x = 1,918.48

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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.