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Finding the Fourth Proportional to 6,611.56, 9,123.27 and 3,958.90

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Solution

The fourth proportional to 6,611.56, 9,123.27 and 3,958.90 is: 5,462.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.56 : 9,123.27 = 3,958.90 : x
  2. Step 2: Convert to fraction form
    6,611.56/9,123.27 = 3,958.90/x
  3. Step 3: Cross multiply
    6,611.56x = 9,123.27 × 3,958.90
  4. Step 4: Simplify right side
    6,611.56x = 36,118,113.60
  5. Step 5: Solve for x
    x = 36,118,113.60/6,611.56
  6. Step 6: Final answer
    x = 5,462.87

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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.