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Finding the Fourth Proportional to 6,406.08, 8,839.20 and 3,611.04

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Solution

The fourth proportional to 6,406.08, 8,839.20 and 3,611.04 is: 4,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,406.08 : 8,839.20 = 3,611.04 : x
  2. Step 2: Convert to fraction form
    6,406.08/8,839.20 = 3,611.04/x
  3. Step 3: Cross multiply
    6,406.08x = 8,839.20 × 3,611.04
  4. Step 4: Simplify right side
    6,406.08x = 31,918,704.77
  5. Step 5: Solve for x
    x = 31,918,704.77/6,406.08
  6. Step 6: Final answer
    x = 4,982.56

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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.