Home / 8,218.12-12,314.22-7,431.88

Finding the Fourth Proportional to 8,218.12, 12,314.22 and 7,431.88

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Solution

The fourth proportional to 8,218.12, 12,314.22 and 7,431.88 is: 11,136.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.12 : 12,314.22 = 7,431.88 : x
  2. Step 2: Convert to fraction form
    8,218.12/12,314.22 = 7,431.88/x
  3. Step 3: Cross multiply
    8,218.12x = 12,314.22 × 7,431.88
  4. Step 4: Simplify right side
    8,218.12x = 91,517,805.33
  5. Step 5: Solve for x
    x = 91,517,805.33/8,218.12
  6. Step 6: Final answer
    x = 11,136.10

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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.