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Finding the Fourth Proportional to 8,668.96, 12,992.48 and 4,285.24

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Solution

The fourth proportional to 8,668.96, 12,992.48 and 4,285.24 is: 6,422.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.96 : 12,992.48 = 4,285.24 : x
  2. Step 2: Convert to fraction form
    8,668.96/12,992.48 = 4,285.24/x
  3. Step 3: Cross multiply
    8,668.96x = 12,992.48 × 4,285.24
  4. Step 4: Simplify right side
    8,668.96x = 55,675,895.00
  5. Step 5: Solve for x
    x = 55,675,895.00/8,668.96
  6. Step 6: Final answer
    x = 6,422.44

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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.