Home / 3,420.83-5,104.40-3,211.85

Finding the Fourth Proportional to 3,420.83, 5,104.40 and 3,211.85

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Solution

The fourth proportional to 3,420.83, 5,104.40 and 3,211.85 is: 4,792.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.83 : 5,104.40 = 3,211.85 : x
  2. Step 2: Convert to fraction form
    3,420.83/5,104.40 = 3,211.85/x
  3. Step 3: Cross multiply
    3,420.83x = 5,104.40 × 3,211.85
  4. Step 4: Simplify right side
    3,420.83x = 16,394,563.84
  5. Step 5: Solve for x
    x = 16,394,563.84/3,420.83
  6. Step 6: Final answer
    x = 4,792.57

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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.