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Finding the Fourth Proportional to 6,487.67, 8,953.16 and 3,969.73

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Solution

The fourth proportional to 6,487.67, 8,953.16 and 3,969.73 is: 5,478.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.67 : 8,953.16 = 3,969.73 : x
  2. Step 2: Convert to fraction form
    6,487.67/8,953.16 = 3,969.73/x
  3. Step 3: Cross multiply
    6,487.67x = 8,953.16 × 3,969.73
  4. Step 4: Simplify right side
    6,487.67x = 35,541,627.85
  5. Step 5: Solve for x
    x = 35,541,627.85/6,487.67
  6. Step 6: Final answer
    x = 5,478.33

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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.