Home / 8,418.12-12,625.08-3,489.12

Finding the Fourth Proportional to 8,418.12, 12,625.08 and 3,489.12

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Solution

The fourth proportional to 8,418.12, 12,625.08 and 3,489.12 is: 5,232.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.12 : 12,625.08 = 3,489.12 : x
  2. Step 2: Convert to fraction form
    8,418.12/12,625.08 = 3,489.12/x
  3. Step 3: Cross multiply
    8,418.12x = 12,625.08 × 3,489.12
  4. Step 4: Simplify right side
    8,418.12x = 44,050,419.13
  5. Step 5: Solve for x
    x = 44,050,419.13/8,418.12
  6. Step 6: Final answer
    x = 5,232.81

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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.