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Finding the Fourth Proportional to 3,949.93, 5,451.33 and 2,271.65

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Solution

The fourth proportional to 3,949.93, 5,451.33 and 2,271.65 is: 3,135.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.93 : 5,451.33 = 2,271.65 : x
  2. Step 2: Convert to fraction form
    3,949.93/5,451.33 = 2,271.65/x
  3. Step 3: Cross multiply
    3,949.93x = 5,451.33 × 2,271.65
  4. Step 4: Simplify right side
    3,949.93x = 12,383,495.06
  5. Step 5: Solve for x
    x = 12,383,495.06/3,949.93
  6. Step 6: Final answer
    x = 3,135.12

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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.