Home / 3,239.21-4,470.03-1,912.94

Finding the Fourth Proportional to 3,239.21, 4,470.03 and 1,912.94

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Solution

The fourth proportional to 3,239.21, 4,470.03 and 1,912.94 is: 2,639.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.21 : 4,470.03 = 1,912.94 : x
  2. Step 2: Convert to fraction form
    3,239.21/4,470.03 = 1,912.94/x
  3. Step 3: Cross multiply
    3,239.21x = 4,470.03 × 1,912.94
  4. Step 4: Simplify right side
    3,239.21x = 8,550,876.84
  5. Step 5: Solve for x
    x = 8,550,876.84/3,239.21
  6. Step 6: Final answer
    x = 2,639.81

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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.