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Finding the Fourth Proportional to 4,672.76, 6,447.64 and 2,906.80

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Solution

The fourth proportional to 4,672.76, 6,447.64 and 2,906.80 is: 4,010.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,672.76 : 6,447.64 = 2,906.80 : x
  2. Step 2: Convert to fraction form
    4,672.76/6,447.64 = 2,906.80/x
  3. Step 3: Cross multiply
    4,672.76x = 6,447.64 × 2,906.80
  4. Step 4: Simplify right side
    4,672.76x = 18,741,999.95
  5. Step 5: Solve for x
    x = 18,741,999.95/4,672.76
  6. Step 6: Final answer
    x = 4,010.91

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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.