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Finding the Fourth Proportional to 7,611.53, 11,418.89 and 3,228.89

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Solution

The fourth proportional to 7,611.53, 11,418.89 and 3,228.89 is: 4,844.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.53 : 11,418.89 = 3,228.89 : x
  2. Step 2: Convert to fraction form
    7,611.53/11,418.89 = 3,228.89/x
  3. Step 3: Cross multiply
    7,611.53x = 11,418.89 × 3,228.89
  4. Step 4: Simplify right side
    7,611.53x = 36,870,266.49
  5. Step 5: Solve for x
    x = 36,870,266.49/7,611.53
  6. Step 6: Final answer
    x = 4,844.01

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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.