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Finding the Fourth Proportional to 8,493.15, 12,730.19 and 3,992.43

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Solution

The fourth proportional to 8,493.15, 12,730.19 and 3,992.43 is: 5,984.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,493.15 : 12,730.19 = 3,992.43 : x
  2. Step 2: Convert to fraction form
    8,493.15/12,730.19 = 3,992.43/x
  3. Step 3: Cross multiply
    8,493.15x = 12,730.19 × 3,992.43
  4. Step 4: Simplify right side
    8,493.15x = 50,824,372.50
  5. Step 5: Solve for x
    x = 50,824,372.50/8,493.15
  6. Step 6: Final answer
    x = 5,984.16

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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.