Home / 5,111.22-7,682.12-4,239.46

Finding the Fourth Proportional to 5,111.22, 7,682.12 and 4,239.46

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Solution

The fourth proportional to 5,111.22, 7,682.12 and 4,239.46 is: 6,371.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.22 : 7,682.12 = 4,239.46 : x
  2. Step 2: Convert to fraction form
    5,111.22/7,682.12 = 4,239.46/x
  3. Step 3: Cross multiply
    5,111.22x = 7,682.12 × 4,239.46
  4. Step 4: Simplify right side
    5,111.22x = 32,568,040.46
  5. Step 5: Solve for x
    x = 32,568,040.46/5,111.22
  6. Step 6: Final answer
    x = 6,371.87

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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.