Home / 3,451.55-5,175.81-985.82

Finding the Fourth Proportional to 3,451.55, 5,175.81 and 985.82

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Solution

The fourth proportional to 3,451.55, 5,175.81 and 985.82 is: 1,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.55 : 5,175.81 = 985.82 : x
  2. Step 2: Convert to fraction form
    3,451.55/5,175.81 = 985.82/x
  3. Step 3: Cross multiply
    3,451.55x = 5,175.81 × 985.82
  4. Step 4: Simplify right side
    3,451.55x = 5,102,391.14
  5. Step 5: Solve for x
    x = 5,102,391.14/3,451.55
  6. Step 6: Final answer
    x = 1,478.29

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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.