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Finding the Fourth Proportional to 6,387.63, 8,813.60 and 3,734.52

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Solution

The fourth proportional to 6,387.63, 8,813.60 and 3,734.52 is: 5,152.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.63 : 8,813.60 = 3,734.52 : x
  2. Step 2: Convert to fraction form
    6,387.63/8,813.60 = 3,734.52/x
  3. Step 3: Cross multiply
    6,387.63x = 8,813.60 × 3,734.52
  4. Step 4: Simplify right side
    6,387.63x = 32,914,546.80
  5. Step 5: Solve for x
    x = 32,914,546.80/6,387.63
  6. Step 6: Final answer
    x = 5,152.86

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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.