Home / 3,958.40-5,462.37-2,189.90

Finding the Fourth Proportional to 3,958.40, 5,462.37 and 2,189.90

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Solution

The fourth proportional to 3,958.40, 5,462.37 and 2,189.90 is: 3,021.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.40 : 5,462.37 = 2,189.90 : x
  2. Step 2: Convert to fraction form
    3,958.40/5,462.37 = 2,189.90/x
  3. Step 3: Cross multiply
    3,958.40x = 5,462.37 × 2,189.90
  4. Step 4: Simplify right side
    3,958.40x = 11,962,044.06
  5. Step 5: Solve for x
    x = 11,962,044.06/3,958.40
  6. Step 6: Final answer
    x = 3,021.94

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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.