Home / 3,225.40-4,450.79-1,789.81

Finding the Fourth Proportional to 3,225.40, 4,450.79 and 1,789.81

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Solution

The fourth proportional to 3,225.40, 4,450.79 and 1,789.81 is: 2,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,225.40 : 4,450.79 = 1,789.81 : x
  2. Step 2: Convert to fraction form
    3,225.40/4,450.79 = 1,789.81/x
  3. Step 3: Cross multiply
    3,225.40x = 4,450.79 × 1,789.81
  4. Step 4: Simplify right side
    3,225.40x = 7,966,051.73
  5. Step 5: Solve for x
    x = 7,966,051.73/3,225.40
  6. Step 6: Final answer
    x = 2,469.79

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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.