Home / 3,219.35-4,443.20-1,960.80

Finding the Fourth Proportional to 3,219.35, 4,443.20 and 1,960.80

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Solution

The fourth proportional to 3,219.35, 4,443.20 and 1,960.80 is: 2,706.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.35 : 4,443.20 = 1,960.80 : x
  2. Step 2: Convert to fraction form
    3,219.35/4,443.20 = 1,960.80/x
  3. Step 3: Cross multiply
    3,219.35x = 4,443.20 × 1,960.80
  4. Step 4: Simplify right side
    3,219.35x = 8,712,216.76
  5. Step 5: Solve for x
    x = 8,712,216.76/3,219.35
  6. Step 6: Final answer
    x = 2,706.21

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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.