Home / 8,979.20-13,469.73-3,437.21

Finding the Fourth Proportional to 8,979.20, 13,469.73 and 3,437.21

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Solution

The fourth proportional to 8,979.20, 13,469.73 and 3,437.21 is: 5,156.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.20 : 13,469.73 = 3,437.21 : x
  2. Step 2: Convert to fraction form
    8,979.20/13,469.73 = 3,437.21/x
  3. Step 3: Cross multiply
    8,979.20x = 13,469.73 × 3,437.21
  4. Step 4: Simplify right side
    8,979.20x = 46,298,290.65
  5. Step 5: Solve for x
    x = 46,298,290.65/8,979.20
  6. Step 6: Final answer
    x = 5,156.17

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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.