Home / 5,518.22-7,615.88-4,992.12

Finding the Fourth Proportional to 5,518.22, 7,615.88 and 4,992.12

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Solution

The fourth proportional to 5,518.22, 7,615.88 and 4,992.12 is: 6,889.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.22 : 7,615.88 = 4,992.12 : x
  2. Step 2: Convert to fraction form
    5,518.22/7,615.88 = 4,992.12/x
  3. Step 3: Cross multiply
    5,518.22x = 7,615.88 × 4,992.12
  4. Step 4: Simplify right side
    5,518.22x = 38,019,361.91
  5. Step 5: Solve for x
    x = 38,019,361.91/5,518.22
  6. Step 6: Final answer
    x = 6,889.79

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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.