Home / 3,989.39-5,506.60-2,729.97

Finding the Fourth Proportional to 3,989.39, 5,506.60 and 2,729.97

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Solution

The fourth proportional to 3,989.39, 5,506.60 and 2,729.97 is: 3,768.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.39 : 5,506.60 = 2,729.97 : x
  2. Step 2: Convert to fraction form
    3,989.39/5,506.60 = 2,729.97/x
  3. Step 3: Cross multiply
    3,989.39x = 5,506.60 × 2,729.97
  4. Step 4: Simplify right side
    3,989.39x = 15,032,852.80
  5. Step 5: Solve for x
    x = 15,032,852.80/3,989.39
  6. Step 6: Final answer
    x = 3,768.21

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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.