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Finding the Fourth Proportional to 8,450.36, 12,661.86 and 5,153.48

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Solution

The fourth proportional to 8,450.36, 12,661.86 and 5,153.48 is: 7,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,450.36 : 12,661.86 = 5,153.48 : x
  2. Step 2: Convert to fraction form
    8,450.36/12,661.86 = 5,153.48/x
  3. Step 3: Cross multiply
    8,450.36x = 12,661.86 × 5,153.48
  4. Step 4: Simplify right side
    8,450.36x = 65,252,642.27
  5. Step 5: Solve for x
    x = 65,252,642.27/8,450.36
  6. Step 6: Final answer
    x = 7,721.88

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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.