Home / 2,334.65-3,221.79-1,286.72

Finding the Fourth Proportional to 2,334.65, 3,221.79 and 1,286.72

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Solution

The fourth proportional to 2,334.65, 3,221.79 and 1,286.72 is: 1,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,334.65 : 3,221.79 = 1,286.72 : x
  2. Step 2: Convert to fraction form
    2,334.65/3,221.79 = 1,286.72/x
  3. Step 3: Cross multiply
    2,334.65x = 3,221.79 × 1,286.72
  4. Step 4: Simplify right side
    2,334.65x = 4,145,525.52
  5. Step 5: Solve for x
    x = 4,145,525.52/2,334.65
  6. Step 6: Final answer
    x = 1,775.66

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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.