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Finding the Fourth Proportional to 3,450.68, 5,175.96 and 853.62

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Solution

The fourth proportional to 3,450.68, 5,175.96 and 853.62 is: 1,280.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.68 : 5,175.96 = 853.62 : x
  2. Step 2: Convert to fraction form
    3,450.68/5,175.96 = 853.62/x
  3. Step 3: Cross multiply
    3,450.68x = 5,175.96 × 853.62
  4. Step 4: Simplify right side
    3,450.68x = 4,418,272.83
  5. Step 5: Solve for x
    x = 4,418,272.83/3,450.68
  6. Step 6: Final answer
    x = 1,280.41

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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.