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Finding the Fourth Proportional to 6,964.26, 9,611.17 and 3,980.54

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Solution

The fourth proportional to 6,964.26, 9,611.17 and 3,980.54 is: 5,493.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,964.26 : 9,611.17 = 3,980.54 : x
  2. Step 2: Convert to fraction form
    6,964.26/9,611.17 = 3,980.54/x
  3. Step 3: Cross multiply
    6,964.26x = 9,611.17 × 3,980.54
  4. Step 4: Simplify right side
    6,964.26x = 38,257,646.63
  5. Step 5: Solve for x
    x = 38,257,646.63/6,964.26
  6. Step 6: Final answer
    x = 5,493.43

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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.