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Finding the Fourth Proportional to 8,516.88, 12,739.68 and 5,503.68

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Solution

The fourth proportional to 8,516.88, 12,739.68 and 5,503.68 is: 8,232.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516.88 : 12,739.68 = 5,503.68 : x
  2. Step 2: Convert to fraction form
    8,516.88/12,739.68 = 5,503.68/x
  3. Step 3: Cross multiply
    8,516.88x = 12,739.68 × 5,503.68
  4. Step 4: Simplify right side
    8,516.88x = 70,115,122.02
  5. Step 5: Solve for x
    x = 70,115,122.02/8,516.88
  6. Step 6: Final answer
    x = 8,232.49

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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.