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Finding the Fourth Proportional to 8,644.41, 11,928.99 and 5,287.38

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Solution

The fourth proportional to 8,644.41, 11,928.99 and 5,287.38 is: 7,296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,644.41 : 11,928.99 = 5,287.38 : x
  2. Step 2: Convert to fraction form
    8,644.41/11,928.99 = 5,287.38/x
  3. Step 3: Cross multiply
    8,644.41x = 11,928.99 × 5,287.38
  4. Step 4: Simplify right side
    8,644.41x = 63,073,103.15
  5. Step 5: Solve for x
    x = 63,073,103.15/8,644.41
  6. Step 6: Final answer
    x = 7,296.40

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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.