Home / 3,027.42-4,178.52-1,978.89

Finding the Fourth Proportional to 3,027.42, 4,178.52 and 1,978.89

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Solution

The fourth proportional to 3,027.42, 4,178.52 and 1,978.89 is: 2,731.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,027.42 : 4,178.52 = 1,978.89 : x
  2. Step 2: Convert to fraction form
    3,027.42/4,178.52 = 1,978.89/x
  3. Step 3: Cross multiply
    3,027.42x = 4,178.52 × 1,978.89
  4. Step 4: Simplify right side
    3,027.42x = 8,268,831.44
  5. Step 5: Solve for x
    x = 8,268,831.44/3,027.42
  6. Step 6: Final answer
    x = 2,731.31

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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.