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Finding the Fourth Proportional to 8,272.99, 12,392.07 and 5,154.49

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Solution

The fourth proportional to 8,272.99, 12,392.07 and 5,154.49 is: 7,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.99 : 12,392.07 = 5,154.49 : x
  2. Step 2: Convert to fraction form
    8,272.99/12,392.07 = 5,154.49/x
  3. Step 3: Cross multiply
    8,272.99x = 12,392.07 × 5,154.49
  4. Step 4: Simplify right side
    8,272.99x = 63,874,800.89
  5. Step 5: Solve for x
    x = 63,874,800.89/8,272.99
  6. Step 6: Final answer
    x = 7,720.88

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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.