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Finding the Fourth Proportional to 8,908.65, 13,359.03 and 4,747.89

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Solution

The fourth proportional to 8,908.65, 13,359.03 and 4,747.89 is: 7,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.65 : 13,359.03 = 4,747.89 : x
  2. Step 2: Convert to fraction form
    8,908.65/13,359.03 = 4,747.89/x
  3. Step 3: Cross multiply
    8,908.65x = 13,359.03 × 4,747.89
  4. Step 4: Simplify right side
    8,908.65x = 63,427,138.15
  5. Step 5: Solve for x
    x = 63,427,138.15/8,908.65
  6. Step 6: Final answer
    x = 7,119.72

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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.