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Finding the Fourth Proportional to 8,712.27, 12,000.95 and 7,028.97

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Solution

The fourth proportional to 8,712.27, 12,000.95 and 7,028.97 is: 9,682.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.27 : 12,000.95 = 7,028.97 : x
  2. Step 2: Convert to fraction form
    8,712.27/12,000.95 = 7,028.97/x
  3. Step 3: Cross multiply
    8,712.27x = 12,000.95 × 7,028.97
  4. Step 4: Simplify right side
    8,712.27x = 84,354,335.09
  5. Step 5: Solve for x
    x = 84,354,335.09/8,712.27
  6. Step 6: Final answer
    x = 9,682.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.