Home / 8,125.30-11,218.12-6,636.80

Finding the Fourth Proportional to 8,125.30, 11,218.12 and 6,636.80

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Solution

The fourth proportional to 8,125.30, 11,218.12 and 6,636.80 is: 9,163.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.30 : 11,218.12 = 6,636.80 : x
  2. Step 2: Convert to fraction form
    8,125.30/11,218.12 = 6,636.80/x
  3. Step 3: Cross multiply
    8,125.30x = 11,218.12 × 6,636.80
  4. Step 4: Simplify right side
    8,125.30x = 74,452,418.82
  5. Step 5: Solve for x
    x = 74,452,418.82/8,125.30
  6. Step 6: Final answer
    x = 9,163.04

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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.