Home / 2,028.08-2,798.68-1,439.60

Finding the Fourth Proportional to 2,028.08, 2,798.68 and 1,439.60

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Solution

The fourth proportional to 2,028.08, 2,798.68 and 1,439.60 is: 1,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.08 : 2,798.68 = 1,439.60 : x
  2. Step 2: Convert to fraction form
    2,028.08/2,798.68 = 1,439.60/x
  3. Step 3: Cross multiply
    2,028.08x = 2,798.68 × 1,439.60
  4. Step 4: Simplify right side
    2,028.08x = 4,028,979.73
  5. Step 5: Solve for x
    x = 4,028,979.73/2,028.08
  6. Step 6: Final answer
    x = 1,986.60

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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.