Home / 3,890.12-5,858.44-3,408.98

Finding the Fourth Proportional to 3,890.12, 5,858.44 and 3,408.98

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Solution

The fourth proportional to 3,890.12, 5,858.44 and 3,408.98 is: 5,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.12 : 5,858.44 = 3,408.98 : x
  2. Step 2: Convert to fraction form
    3,890.12/5,858.44 = 3,408.98/x
  3. Step 3: Cross multiply
    3,890.12x = 5,858.44 × 3,408.98
  4. Step 4: Simplify right side
    3,890.12x = 19,971,304.79
  5. Step 5: Solve for x
    x = 19,971,304.79/3,890.12
  6. Step 6: Final answer
    x = 5,133.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.