Home / 3,221.70-4,443.84-2,557.50

Finding the Fourth Proportional to 3,221.70, 4,443.84 and 2,557.50

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Solution

The fourth proportional to 3,221.70, 4,443.84 and 2,557.50 is: 3,527.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.70 : 4,443.84 = 2,557.50 : x
  2. Step 2: Convert to fraction form
    3,221.70/4,443.84 = 2,557.50/x
  3. Step 3: Cross multiply
    3,221.70x = 4,443.84 × 2,557.50
  4. Step 4: Simplify right side
    3,221.70x = 11,365,120.80
  5. Step 5: Solve for x
    x = 11,365,120.80/3,221.70
  6. Step 6: Final answer
    x = 3,527.68

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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.