Home / 3,438.02-4,744.20-2,021.76

Finding the Fourth Proportional to 3,438.02, 4,744.20 and 2,021.76

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Solution

The fourth proportional to 3,438.02, 4,744.20 and 2,021.76 is: 2,789.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.02 : 4,744.20 = 2,021.76 : x
  2. Step 2: Convert to fraction form
    3,438.02/4,744.20 = 2,021.76/x
  3. Step 3: Cross multiply
    3,438.02x = 4,744.20 × 2,021.76
  4. Step 4: Simplify right side
    3,438.02x = 9,591,633.79
  5. Step 5: Solve for x
    x = 9,591,633.79/3,438.02
  6. Step 6: Final answer
    x = 2,789.88

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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.