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Finding the Fourth Proportional to 6,611.48, 9,921.20 and 2,450.80

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Solution

The fourth proportional to 6,611.48, 9,921.20 and 2,450.80 is: 3,677.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.48 : 9,921.20 = 2,450.80 : x
  2. Step 2: Convert to fraction form
    6,611.48/9,921.20 = 2,450.80/x
  3. Step 3: Cross multiply
    6,611.48x = 9,921.20 × 2,450.80
  4. Step 4: Simplify right side
    6,611.48x = 24,314,876.96
  5. Step 5: Solve for x
    x = 24,314,876.96/6,611.48
  6. Step 6: Final answer
    x = 3,677.68

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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.