Home / 5,418.03-8,126.97-2,128.83

Finding the Fourth Proportional to 5,418.03, 8,126.97 and 2,128.83

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Solution

The fourth proportional to 5,418.03, 8,126.97 and 2,128.83 is: 3,193.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.03 : 8,126.97 = 2,128.83 : x
  2. Step 2: Convert to fraction form
    5,418.03/8,126.97 = 2,128.83/x
  3. Step 3: Cross multiply
    5,418.03x = 8,126.97 × 2,128.83
  4. Step 4: Simplify right side
    5,418.03x = 17,300,937.55
  5. Step 5: Solve for x
    x = 17,300,937.55/5,418.03
  6. Step 6: Final answer
    x = 3,193.22

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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.