Home / 2,078.45-2,867.34-1,238.73

Finding the Fourth Proportional to 2,078.45, 2,867.34 and 1,238.73

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Solution

The fourth proportional to 2,078.45, 2,867.34 and 1,238.73 is: 1,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.45 : 2,867.34 = 1,238.73 : x
  2. Step 2: Convert to fraction form
    2,078.45/2,867.34 = 1,238.73/x
  3. Step 3: Cross multiply
    2,078.45x = 2,867.34 × 1,238.73
  4. Step 4: Simplify right side
    2,078.45x = 3,551,860.08
  5. Step 5: Solve for x
    x = 3,551,860.08/2,078.45
  6. Step 6: Final answer
    x = 1,708.90

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1.5x scale

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.