Home / 2,917.78-4,374.22-1,992.06

Finding the Fourth Proportional to 2,917.78, 4,374.22 and 1,992.06

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Solution

The fourth proportional to 2,917.78, 4,374.22 and 1,992.06 is: 2,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.78 : 4,374.22 = 1,992.06 : x
  2. Step 2: Convert to fraction form
    2,917.78/4,374.22 = 1,992.06/x
  3. Step 3: Cross multiply
    2,917.78x = 4,374.22 × 1,992.06
  4. Step 4: Simplify right side
    2,917.78x = 8,713,708.69
  5. Step 5: Solve for x
    x = 8,713,708.69/2,917.78
  6. Step 6: Final answer
    x = 2,986.42

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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.