Home / 3,988.38-5,503.86-2,219.94

Finding the Fourth Proportional to 3,988.38, 5,503.86 and 2,219.94

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Solution

The fourth proportional to 3,988.38, 5,503.86 and 2,219.94 is: 3,063.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.38 : 5,503.86 = 2,219.94 : x
  2. Step 2: Convert to fraction form
    3,988.38/5,503.86 = 2,219.94/x
  3. Step 3: Cross multiply
    3,988.38x = 5,503.86 × 2,219.94
  4. Step 4: Simplify right side
    3,988.38x = 12,218,238.97
  5. Step 5: Solve for x
    x = 12,218,238.97/3,988.38
  6. Step 6: Final answer
    x = 3,063.46

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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.