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Finding the Fourth Proportional to 8,453.58, 12,661.91 and 5,156.68

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Solution

The fourth proportional to 8,453.58, 12,661.91 and 5,156.68 is: 7,723.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.58 : 12,661.91 = 5,156.68 : x
  2. Step 2: Convert to fraction form
    8,453.58/12,661.91 = 5,156.68/x
  3. Step 3: Cross multiply
    8,453.58x = 12,661.91 × 5,156.68
  4. Step 4: Simplify right side
    8,453.58x = 65,293,354.75
  5. Step 5: Solve for x
    x = 65,293,354.75/8,453.58
  6. Step 6: Final answer
    x = 7,723.76

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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.