Home / 3,988.22-5,503.74-2,219.83

Finding the Fourth Proportional to 3,988.22, 5,503.74 and 2,219.83

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Solution

The fourth proportional to 3,988.22, 5,503.74 and 2,219.83 is: 3,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.22 : 5,503.74 = 2,219.83 : x
  2. Step 2: Convert to fraction form
    3,988.22/5,503.74 = 2,219.83/x
  3. Step 3: Cross multiply
    3,988.22x = 5,503.74 × 2,219.83
  4. Step 4: Simplify right side
    3,988.22x = 12,217,361.73
  5. Step 5: Solve for x
    x = 12,217,361.73/3,988.22
  6. Step 6: Final answer
    x = 3,063.36

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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.