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Finding the Fourth Proportional to 11,290.92, 16,939.02 and 3,499.32

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Solution

The fourth proportional to 11,290.92, 16,939.02 and 3,499.32 is: 5,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.92 : 16,939.02 = 3,499.32 : x
  2. Step 2: Convert to fraction form
    11,290.92/16,939.02 = 3,499.32/x
  3. Step 3: Cross multiply
    11,290.92x = 16,939.02 × 3,499.32
  4. Step 4: Simplify right side
    11,290.92x = 59,275,051.47
  5. Step 5: Solve for x
    x = 59,275,051.47/11,290.92
  6. Step 6: Final answer
    x = 5,249.80

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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.