Home / 8,220.12-12,326.92-3,540.48

Finding the Fourth Proportional to 8,220.12, 12,326.92 and 3,540.48

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Solution

The fourth proportional to 8,220.12, 12,326.92 and 3,540.48 is: 5,309.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.12 : 12,326.92 = 3,540.48 : x
  2. Step 2: Convert to fraction form
    8,220.12/12,326.92 = 3,540.48/x
  3. Step 3: Cross multiply
    8,220.12x = 12,326.92 × 3,540.48
  4. Step 4: Simplify right side
    8,220.12x = 43,643,213.72
  5. Step 5: Solve for x
    x = 43,643,213.72/8,220.12
  6. Step 6: Final answer
    x = 5,309.32

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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.