Home / 2,225.12-3,336.80-664.64

Finding the Fourth Proportional to 2,225.12, 3,336.80 and 664.64

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Solution

The fourth proportional to 2,225.12, 3,336.80 and 664.64 is: 996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.12 : 3,336.80 = 664.64 : x
  2. Step 2: Convert to fraction form
    2,225.12/3,336.80 = 664.64/x
  3. Step 3: Cross multiply
    2,225.12x = 3,336.80 × 664.64
  4. Step 4: Simplify right side
    2,225.12x = 2,217,770.75
  5. Step 5: Solve for x
    x = 2,217,770.75/2,225.12
  6. Step 6: Final answer
    x = 996.70

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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.