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Finding the Fourth Proportional to 6,272.70, 8,656.38 and 3,914.88

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Solution

The fourth proportional to 6,272.70, 8,656.38 and 3,914.88 is: 5,402.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,272.70 : 8,656.38 = 3,914.88 : x
  2. Step 2: Convert to fraction form
    6,272.70/8,656.38 = 3,914.88/x
  3. Step 3: Cross multiply
    6,272.70x = 8,656.38 × 3,914.88
  4. Step 4: Simplify right side
    6,272.70x = 33,888,688.93
  5. Step 5: Solve for x
    x = 33,888,688.93/6,272.70
  6. Step 6: Final answer
    x = 5,402.57

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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.