Home / 3,450.40-5,175.63-985.22

Finding the Fourth Proportional to 3,450.40, 5,175.63 and 985.22

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Solution

The fourth proportional to 3,450.40, 5,175.63 and 985.22 is: 1,477.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.40 : 5,175.63 = 985.22 : x
  2. Step 2: Convert to fraction form
    3,450.40/5,175.63 = 985.22/x
  3. Step 3: Cross multiply
    3,450.40x = 5,175.63 × 985.22
  4. Step 4: Simplify right side
    3,450.40x = 5,099,134.19
  5. Step 5: Solve for x
    x = 5,099,134.19/3,450.40
  6. Step 6: Final answer
    x = 1,477.84

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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.