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Finding the Fourth Proportional to 8,768.28, 13,128.66 and 5,837.16

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Solution

The fourth proportional to 8,768.28, 13,128.66 and 5,837.16 is: 8,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.28 : 13,128.66 = 5,837.16 : x
  2. Step 2: Convert to fraction form
    8,768.28/13,128.66 = 5,837.16/x
  3. Step 3: Cross multiply
    8,768.28x = 13,128.66 × 5,837.16
  4. Step 4: Simplify right side
    8,768.28x = 76,634,089.01
  5. Step 5: Solve for x
    x = 76,634,089.01/8,768.28
  6. Step 6: Final answer
    x = 8,739.92

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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.