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Finding the Fourth Proportional to 8,882.72, 12,255.90 and 6,520.76

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Solution

The fourth proportional to 8,882.72, 12,255.90 and 6,520.76 is: 8,996.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,882.72 : 12,255.90 = 6,520.76 : x
  2. Step 2: Convert to fraction form
    8,882.72/12,255.90 = 6,520.76/x
  3. Step 3: Cross multiply
    8,882.72x = 12,255.90 × 6,520.76
  4. Step 4: Simplify right side
    8,882.72x = 79,917,782.48
  5. Step 5: Solve for x
    x = 79,917,782.48/8,882.72
  6. Step 6: Final answer
    x = 8,996.99

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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.