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Finding the Fourth Proportional to 8,814.83, 12,153.97 and 8,071.25

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Solution

The fourth proportional to 8,814.83, 12,153.97 and 8,071.25 is: 11,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,814.83 : 12,153.97 = 8,071.25 : x
  2. Step 2: Convert to fraction form
    8,814.83/12,153.97 = 8,071.25/x
  3. Step 3: Cross multiply
    8,814.83x = 12,153.97 × 8,071.25
  4. Step 4: Simplify right side
    8,814.83x = 98,097,740.57
  5. Step 5: Solve for x
    x = 98,097,740.57/8,814.83
  6. Step 6: Final answer
    x = 11,128.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.