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Finding the Fourth Proportional to 8,979.40, 13,470.01 and 2,406.25

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Solution

The fourth proportional to 8,979.40, 13,470.01 and 2,406.25 is: 3,609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.40 : 13,470.01 = 2,406.25 : x
  2. Step 2: Convert to fraction form
    8,979.40/13,470.01 = 2,406.25/x
  3. Step 3: Cross multiply
    8,979.40x = 13,470.01 × 2,406.25
  4. Step 4: Simplify right side
    8,979.40x = 32,412,171.87
  5. Step 5: Solve for x
    x = 32,412,171.87/8,979.40
  6. Step 6: Final answer
    x = 3,609.62

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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.