Home / 2,725.20-3,763.08-2,021.20

Finding the Fourth Proportional to 2,725.20, 3,763.08 and 2,021.20

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Solution

The fourth proportional to 2,725.20, 3,763.08 and 2,021.20 is: 2,790.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.20 : 3,763.08 = 2,021.20 : x
  2. Step 2: Convert to fraction form
    2,725.20/3,763.08 = 2,021.20/x
  3. Step 3: Cross multiply
    2,725.20x = 3,763.08 × 2,021.20
  4. Step 4: Simplify right side
    2,725.20x = 7,605,937.30
  5. Step 5: Solve for x
    x = 7,605,937.30/2,725.20
  6. Step 6: Final answer
    x = 2,790.96

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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.