Home / 5,518.22-7,614.97-3,128.41

Finding the Fourth Proportional to 5,518.22, 7,614.97 and 3,128.41

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Solution

The fourth proportional to 5,518.22, 7,614.97 and 3,128.41 is: 4,317.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.22 : 7,614.97 = 3,128.41 : x
  2. Step 2: Convert to fraction form
    5,518.22/7,614.97 = 3,128.41/x
  3. Step 3: Cross multiply
    5,518.22x = 7,614.97 × 3,128.41
  4. Step 4: Simplify right side
    5,518.22x = 23,822,729.26
  5. Step 5: Solve for x
    x = 23,822,729.26/5,518.22
  6. Step 6: Final answer
    x = 4,317.11

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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.