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Finding the Fourth Proportional to 8,678.88, 13,016.16 and 3,935.52

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Solution

The fourth proportional to 8,678.88, 13,016.16 and 3,935.52 is: 5,902.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.88 : 13,016.16 = 3,935.52 : x
  2. Step 2: Convert to fraction form
    8,678.88/13,016.16 = 3,935.52/x
  3. Step 3: Cross multiply
    8,678.88x = 13,016.16 × 3,935.52
  4. Step 4: Simplify right side
    8,678.88x = 51,225,358.00
  5. Step 5: Solve for x
    x = 51,225,358.00/8,678.88
  6. Step 6: Final answer
    x = 5,902.30

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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.