Home / 2,028.20-2,798.03-1,188.92

Finding the Fourth Proportional to 2,028.20, 2,798.03 and 1,188.92

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Solution

The fourth proportional to 2,028.20, 2,798.03 and 1,188.92 is: 1,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.20 : 2,798.03 = 1,188.92 : x
  2. Step 2: Convert to fraction form
    2,028.20/2,798.03 = 1,188.92/x
  3. Step 3: Cross multiply
    2,028.20x = 2,798.03 × 1,188.92
  4. Step 4: Simplify right side
    2,028.20x = 3,326,643.79
  5. Step 5: Solve for x
    x = 3,326,643.79/2,028.20
  6. Step 6: Final answer
    x = 1,640.20

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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.