Home / 5,128.20-7,074.41-4,418.82

Finding the Fourth Proportional to 5,128.20, 7,074.41 and 4,418.82

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Solution

The fourth proportional to 5,128.20, 7,074.41 and 4,418.82 is: 6,095.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.20 : 7,074.41 = 4,418.82 : x
  2. Step 2: Convert to fraction form
    5,128.20/7,074.41 = 4,418.82/x
  3. Step 3: Cross multiply
    5,128.20x = 7,074.41 × 4,418.82
  4. Step 4: Simplify right side
    5,128.20x = 31,260,522.30
  5. Step 5: Solve for x
    x = 31,260,522.30/5,128.20
  6. Step 6: Final answer
    x = 6,095.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.