Home / 7,219.36-9,960.96-4,074.88

Finding the Fourth Proportional to 7,219.36, 9,960.96 and 4,074.88

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Solution

The fourth proportional to 7,219.36, 9,960.96 and 4,074.88 is: 5,622.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.36 : 9,960.96 = 4,074.88 : x
  2. Step 2: Convert to fraction form
    7,219.36/9,960.96 = 4,074.88/x
  3. Step 3: Cross multiply
    7,219.36x = 9,960.96 × 4,074.88
  4. Step 4: Simplify right side
    7,219.36x = 40,589,716.68
  5. Step 5: Solve for x
    x = 40,589,716.68/7,219.36
  6. Step 6: Final answer
    x = 5,622.34

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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.