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Finding the Fourth Proportional to 5,611.41, 8,400.71 and 3,939.77

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Solution

The fourth proportional to 5,611.41, 8,400.71 and 3,939.77 is: 5,898.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.41 : 8,400.71 = 3,939.77 : x
  2. Step 2: Convert to fraction form
    5,611.41/8,400.71 = 3,939.77/x
  3. Step 3: Cross multiply
    5,611.41x = 8,400.71 × 3,939.77
  4. Step 4: Simplify right side
    5,611.41x = 33,096,896.09
  5. Step 5: Solve for x
    x = 33,096,896.09/5,611.41
  6. Step 6: Final answer
    x = 5,898.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.