Home / 3,988.28-5,503.58-2,219.84

Finding the Fourth Proportional to 3,988.28, 5,503.58 and 2,219.84

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Solution

The fourth proportional to 3,988.28, 5,503.58 and 2,219.84 is: 3,063.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.28 : 5,503.58 = 2,219.84 : x
  2. Step 2: Convert to fraction form
    3,988.28/5,503.58 = 2,219.84/x
  3. Step 3: Cross multiply
    3,988.28x = 5,503.58 × 2,219.84
  4. Step 4: Simplify right side
    3,988.28x = 12,217,067.03
  5. Step 5: Solve for x
    x = 12,217,067.03/3,988.28
  6. Step 6: Final answer
    x = 3,063.24

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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.