Home / 8,979.72-13,467.68-3,431.80

Finding the Fourth Proportional to 8,979.72, 13,467.68 and 3,431.80

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Solution

The fourth proportional to 8,979.72, 13,467.68 and 3,431.80 is: 5,146.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.72 : 13,467.68 = 3,431.80 : x
  2. Step 2: Convert to fraction form
    8,979.72/13,467.68 = 3,431.80/x
  3. Step 3: Cross multiply
    8,979.72x = 13,467.68 × 3,431.80
  4. Step 4: Simplify right side
    8,979.72x = 46,218,384.22
  5. Step 5: Solve for x
    x = 46,218,384.22/8,979.72
  6. Step 6: Final answer
    x = 5,146.97

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1.5x scale

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.