Home / 4,269.40-6,391.65-2,620.95

Finding the Fourth Proportional to 4,269.40, 6,391.65 and 2,620.95

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Solution

The fourth proportional to 4,269.40, 6,391.65 and 2,620.95 is: 3,923.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,269.40 : 6,391.65 = 2,620.95 : x
  2. Step 2: Convert to fraction form
    4,269.40/6,391.65 = 2,620.95/x
  3. Step 3: Cross multiply
    4,269.40x = 6,391.65 × 2,620.95
  4. Step 4: Simplify right side
    4,269.40x = 16,752,211.05
  5. Step 5: Solve for x
    x = 16,752,211.05/4,269.40
  6. Step 6: Final answer
    x = 3,923.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.