Home / 3,910.41-5,396.33-2,117.89

Finding the Fourth Proportional to 3,910.41, 5,396.33 and 2,117.89

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Solution

The fourth proportional to 3,910.41, 5,396.33 and 2,117.89 is: 2,922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.41 : 5,396.33 = 2,117.89 : x
  2. Step 2: Convert to fraction form
    3,910.41/5,396.33 = 2,117.89/x
  3. Step 3: Cross multiply
    3,910.41x = 5,396.33 × 2,117.89
  4. Step 4: Simplify right side
    3,910.41x = 11,428,845.38
  5. Step 5: Solve for x
    x = 11,428,845.38/3,910.41
  6. Step 6: Final answer
    x = 2,922.67

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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.