Home / 3,408.80-5,087.56-2,999.20

Finding the Fourth Proportional to 3,408.80, 5,087.56 and 2,999.20

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Solution

The fourth proportional to 3,408.80, 5,087.56 and 2,999.20 is: 4,476.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.80 : 5,087.56 = 2,999.20 : x
  2. Step 2: Convert to fraction form
    3,408.80/5,087.56 = 2,999.20/x
  3. Step 3: Cross multiply
    3,408.80x = 5,087.56 × 2,999.20
  4. Step 4: Simplify right side
    3,408.80x = 15,258,609.95
  5. Step 5: Solve for x
    x = 15,258,609.95/3,408.80
  6. Step 6: Final answer
    x = 4,476.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.