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Finding the Fourth Proportional to 8,979.03, 13,470.98 and 3,429.45

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Solution

The fourth proportional to 8,979.03, 13,470.98 and 3,429.45 is: 5,145.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.03 : 13,470.98 = 3,429.45 : x
  2. Step 2: Convert to fraction form
    8,979.03/13,470.98 = 3,429.45/x
  3. Step 3: Cross multiply
    8,979.03x = 13,470.98 × 3,429.45
  4. Step 4: Simplify right side
    8,979.03x = 46,198,035.21
  5. Step 5: Solve for x
    x = 46,198,035.21/8,979.03
  6. Step 6: Final answer
    x = 5,145.10

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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.