Home / 1,628.21-2,439.11-1,078.73

Finding the Fourth Proportional to 1,628.21, 2,439.11 and 1,078.73

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Solution

The fourth proportional to 1,628.21, 2,439.11 and 1,078.73 is: 1,615.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.21 : 2,439.11 = 1,078.73 : x
  2. Step 2: Convert to fraction form
    1,628.21/2,439.11 = 1,078.73/x
  3. Step 3: Cross multiply
    1,628.21x = 2,439.11 × 1,078.73
  4. Step 4: Simplify right side
    1,628.21x = 2,631,141.13
  5. Step 5: Solve for x
    x = 2,631,141.13/1,628.21
  6. Step 6: Final answer
    x = 1,615.97

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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.