Home / 5,418.67-8,128.05-1,523.20

Finding the Fourth Proportional to 5,418.67, 8,128.05 and 1,523.20

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Solution

The fourth proportional to 5,418.67, 8,128.05 and 1,523.20 is: 2,284.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.67 : 8,128.05 = 1,523.20 : x
  2. Step 2: Convert to fraction form
    5,418.67/8,128.05 = 1,523.20/x
  3. Step 3: Cross multiply
    5,418.67x = 8,128.05 × 1,523.20
  4. Step 4: Simplify right side
    5,418.67x = 12,380,645.76
  5. Step 5: Solve for x
    x = 12,380,645.76/5,418.67
  6. Step 6: Final answer
    x = 2,284.81

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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.