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Finding the Fourth Proportional to 8,753.48, 13,078.96 and 8,447.24

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Solution

The fourth proportional to 8,753.48, 13,078.96 and 8,447.24 is: 12,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.48 : 13,078.96 = 8,447.24 : x
  2. Step 2: Convert to fraction form
    8,753.48/13,078.96 = 8,447.24/x
  3. Step 3: Cross multiply
    8,753.48x = 13,078.96 × 8,447.24
  4. Step 4: Simplify right side
    8,753.48x = 110,481,114.07
  5. Step 5: Solve for x
    x = 110,481,114.07/8,753.48
  6. Step 6: Final answer
    x = 12,621.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.