Home / 5,609.88-7,735.91-3,930.75

Finding the Fourth Proportional to 5,609.88, 7,735.91 and 3,930.75

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Solution

The fourth proportional to 5,609.88, 7,735.91 and 3,930.75 is: 5,420.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,609.88 : 7,735.91 = 3,930.75 : x
  2. Step 2: Convert to fraction form
    5,609.88/7,735.91 = 3,930.75/x
  3. Step 3: Cross multiply
    5,609.88x = 7,735.91 × 3,930.75
  4. Step 4: Simplify right side
    5,609.88x = 30,407,938.06
  5. Step 5: Solve for x
    x = 30,407,938.06/5,609.88
  6. Step 6: Final answer
    x = 5,420.43

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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.