Home / 3,450.45-5,175.56-985.27

Finding the Fourth Proportional to 3,450.45, 5,175.56 and 985.27

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Solution

The fourth proportional to 3,450.45, 5,175.56 and 985.27 is: 1,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.45 : 5,175.56 = 985.27 : x
  2. Step 2: Convert to fraction form
    3,450.45/5,175.56 = 985.27/x
  3. Step 3: Cross multiply
    3,450.45x = 5,175.56 × 985.27
  4. Step 4: Simplify right side
    3,450.45x = 5,099,302.82
  5. Step 5: Solve for x
    x = 5,099,302.82/3,450.45
  6. Step 6: Final answer
    x = 1,477.87

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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.