Home / 3,220.81-4,444.12-1,961.80

Finding the Fourth Proportional to 3,220.81, 4,444.12 and 1,961.80

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Solution

The fourth proportional to 3,220.81, 4,444.12 and 1,961.80 is: 2,706.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.81 : 4,444.12 = 1,961.80 : x
  2. Step 2: Convert to fraction form
    3,220.81/4,444.12 = 1,961.80/x
  3. Step 3: Cross multiply
    3,220.81x = 4,444.12 × 1,961.80
  4. Step 4: Simplify right side
    3,220.81x = 8,718,474.62
  5. Step 5: Solve for x
    x = 8,718,474.62/3,220.81
  6. Step 6: Final answer
    x = 2,706.92

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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.