Home / 3,512.20-4,847.80-2,020.28

Finding the Fourth Proportional to 3,512.20, 4,847.80 and 2,020.28

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Solution

The fourth proportional to 3,512.20, 4,847.80 and 2,020.28 is: 2,788.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.20 : 4,847.80 = 2,020.28 : x
  2. Step 2: Convert to fraction form
    3,512.20/4,847.80 = 2,020.28/x
  3. Step 3: Cross multiply
    3,512.20x = 4,847.80 × 2,020.28
  4. Step 4: Simplify right side
    3,512.20x = 9,793,913.38
  5. Step 5: Solve for x
    x = 9,793,913.38/3,512.20
  6. Step 6: Final answer
    x = 2,788.54

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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.