Home / 7,221.21-9,964.86-4,236.83

Finding the Fourth Proportional to 7,221.21, 9,964.86 and 4,236.83

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Solution

The fourth proportional to 7,221.21, 9,964.86 and 4,236.83 is: 5,846.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.21 : 9,964.86 = 4,236.83 : x
  2. Step 2: Convert to fraction form
    7,221.21/9,964.86 = 4,236.83/x
  3. Step 3: Cross multiply
    7,221.21x = 9,964.86 × 4,236.83
  4. Step 4: Simplify right side
    7,221.21x = 42,219,367.97
  5. Step 5: Solve for x
    x = 42,219,367.97/7,221.21
  6. Step 6: Final answer
    x = 5,846.58

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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.