Home / 3,418.80-5,128.36-1,774.30

Finding the Fourth Proportional to 3,418.80, 5,128.36 and 1,774.30

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Solution

The fourth proportional to 3,418.80, 5,128.36 and 1,774.30 is: 2,661.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.80 : 5,128.36 = 1,774.30 : x
  2. Step 2: Convert to fraction form
    3,418.80/5,128.36 = 1,774.30/x
  3. Step 3: Cross multiply
    3,418.80x = 5,128.36 × 1,774.30
  4. Step 4: Simplify right side
    3,418.80x = 9,099,249.15
  5. Step 5: Solve for x
    x = 9,099,249.15/3,418.80
  6. Step 6: Final answer
    x = 2,661.53

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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.