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Finding the Fourth Proportional to 8,662.97, 12,992.59 and 2,740.32

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Solution

The fourth proportional to 8,662.97, 12,992.59 and 2,740.32 is: 4,109.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.97 : 12,992.59 = 2,740.32 : x
  2. Step 2: Convert to fraction form
    8,662.97/12,992.59 = 2,740.32/x
  3. Step 3: Cross multiply
    8,662.97x = 12,992.59 × 2,740.32
  4. Step 4: Simplify right side
    8,662.97x = 35,603,854.23
  5. Step 5: Solve for x
    x = 35,603,854.23/8,662.97
  6. Step 6: Final answer
    x = 4,109.89

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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.