Home / 4,120.50-5,687.20-3,222.46

Finding the Fourth Proportional to 4,120.50, 5,687.20 and 3,222.46

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Solution

The fourth proportional to 4,120.50, 5,687.20 and 3,222.46 is: 4,447.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.50 : 5,687.20 = 3,222.46 : x
  2. Step 2: Convert to fraction form
    4,120.50/5,687.20 = 3,222.46/x
  3. Step 3: Cross multiply
    4,120.50x = 5,687.20 × 3,222.46
  4. Step 4: Simplify right side
    4,120.50x = 18,326,774.51
  5. Step 5: Solve for x
    x = 18,326,774.51/4,120.50
  6. Step 6: Final answer
    x = 4,447.71

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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.