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Finding the Fourth Proportional to 7,939.99, 11,906.13 and 2,392.30

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Solution

The fourth proportional to 7,939.99, 11,906.13 and 2,392.30 is: 3,587.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.99 : 11,906.13 = 2,392.30 : x
  2. Step 2: Convert to fraction form
    7,939.99/11,906.13 = 2,392.30/x
  3. Step 3: Cross multiply
    7,939.99x = 11,906.13 × 2,392.30
  4. Step 4: Simplify right side
    7,939.99x = 28,483,034.80
  5. Step 5: Solve for x
    x = 28,483,034.80/7,939.99
  6. Step 6: Final answer
    x = 3,587.29

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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.