Home / 2,571.20-3,851.40-2,020.76

Finding the Fourth Proportional to 2,571.20, 3,851.40 and 2,020.76

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Solution

The fourth proportional to 2,571.20, 3,851.40 and 2,020.76 is: 3,026.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.20 : 3,851.40 = 2,020.76 : x
  2. Step 2: Convert to fraction form
    2,571.20/3,851.40 = 2,020.76/x
  3. Step 3: Cross multiply
    2,571.20x = 3,851.40 × 2,020.76
  4. Step 4: Simplify right side
    2,571.20x = 7,782,755.06
  5. Step 5: Solve for x
    x = 7,782,755.06/2,571.20
  6. Step 6: Final answer
    x = 3,026.90

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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.