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Finding the Fourth Proportional to 8,348.25, 11,520.72 and 4,622.25

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Solution

The fourth proportional to 8,348.25, 11,520.72 and 4,622.25 is: 6,378.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.25 : 11,520.72 = 4,622.25 : x
  2. Step 2: Convert to fraction form
    8,348.25/11,520.72 = 4,622.25/x
  3. Step 3: Cross multiply
    8,348.25x = 11,520.72 × 4,622.25
  4. Step 4: Simplify right side
    8,348.25x = 53,251,648.02
  5. Step 5: Solve for x
    x = 53,251,648.02/8,348.25
  6. Step 6: Final answer
    x = 6,378.78

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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.