Home / 6,921.20-10,378.44-3,222.56

Finding the Fourth Proportional to 6,921.20, 10,378.44 and 3,222.56

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Solution

The fourth proportional to 6,921.20, 10,378.44 and 3,222.56 is: 4,832.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.20 : 10,378.44 = 3,222.56 : x
  2. Step 2: Convert to fraction form
    6,921.20/10,378.44 = 3,222.56/x
  3. Step 3: Cross multiply
    6,921.20x = 10,378.44 × 3,222.56
  4. Step 4: Simplify right side
    6,921.20x = 33,445,145.61
  5. Step 5: Solve for x
    x = 33,445,145.61/6,921.20
  6. Step 6: Final answer
    x = 4,832.28

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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.