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Finding the Fourth Proportional to 3,951.79, 5,453.63 and 2,273.20

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Solution

The fourth proportional to 3,951.79, 5,453.63 and 2,273.20 is: 3,137.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.79 : 5,453.63 = 2,273.20 : x
  2. Step 2: Convert to fraction form
    3,951.79/5,453.63 = 2,273.20/x
  3. Step 3: Cross multiply
    3,951.79x = 5,453.63 × 2,273.20
  4. Step 4: Simplify right side
    3,951.79x = 12,397,153.08
  5. Step 5: Solve for x
    x = 12,397,153.08/3,951.79
  6. Step 6: Final answer
    x = 3,137.10

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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.