Home / 7,202.21-9,939.83-4,220.55

Finding the Fourth Proportional to 7,202.21, 9,939.83 and 4,220.55

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Solution

The fourth proportional to 7,202.21, 9,939.83 and 4,220.55 is: 5,824.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,202.21 : 9,939.83 = 4,220.55 : x
  2. Step 2: Convert to fraction form
    7,202.21/9,939.83 = 4,220.55/x
  3. Step 3: Cross multiply
    7,202.21x = 9,939.83 × 4,220.55
  4. Step 4: Simplify right side
    7,202.21x = 41,951,528.40
  5. Step 5: Solve for x
    x = 41,951,528.40/7,202.21
  6. Step 6: Final answer
    x = 5,824.82

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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.