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Finding the Fourth Proportional to 8,187.88, 12,280.74 and 4,489.24

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Solution

The fourth proportional to 8,187.88, 12,280.74 and 4,489.24 is: 6,733.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.88 : 12,280.74 = 4,489.24 : x
  2. Step 2: Convert to fraction form
    8,187.88/12,280.74 = 4,489.24/x
  3. Step 3: Cross multiply
    8,187.88x = 12,280.74 × 4,489.24
  4. Step 4: Simplify right side
    8,187.88x = 55,131,189.24
  5. Step 5: Solve for x
    x = 55,131,189.24/8,187.88
  6. Step 6: Final answer
    x = 6,733.27

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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.