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Finding the Fourth Proportional to 8,112.79, 11,195.65 and 4,576

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Solution

The fourth proportional to 8,112.79, 11,195.65 and 4,576 is: 6,314.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.79 : 11,195.65 = 4,576 : x
  2. Step 2: Convert to fraction form
    8,112.79/11,195.65 = 4,576/x
  3. Step 3: Cross multiply
    8,112.79x = 11,195.65 × 4,576
  4. Step 4: Simplify right side
    8,112.79x = 51,231,271.52
  5. Step 5: Solve for x
    x = 51,231,271.52/8,112.79
  6. Step 6: Final answer
    x = 6,314.88

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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.