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Finding the Fourth Proportional to 8,451.36, 12,663.36 and 5,154.48

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Solution

The fourth proportional to 8,451.36, 12,663.36 and 5,154.48 is: 7,723.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.36 : 12,663.36 = 5,154.48 : x
  2. Step 2: Convert to fraction form
    8,451.36/12,663.36 = 5,154.48/x
  3. Step 3: Cross multiply
    8,451.36x = 12,663.36 × 5,154.48
  4. Step 4: Simplify right side
    8,451.36x = 65,273,035.85
  5. Step 5: Solve for x
    x = 65,273,035.85/8,451.36
  6. Step 6: Final answer
    x = 7,723.38

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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.