Home / 7,611.39-11,415.72-3,450.63

Finding the Fourth Proportional to 7,611.39, 11,415.72 and 3,450.63

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Solution

The fourth proportional to 7,611.39, 11,415.72 and 3,450.63 is: 5,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.39 : 11,415.72 = 3,450.63 : x
  2. Step 2: Convert to fraction form
    7,611.39/11,415.72 = 3,450.63/x
  3. Step 3: Cross multiply
    7,611.39x = 11,415.72 × 3,450.63
  4. Step 4: Simplify right side
    7,611.39x = 39,391,425.90
  5. Step 5: Solve for x
    x = 39,391,425.90/7,611.39
  6. Step 6: Final answer
    x = 5,175.33

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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.