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Finding the Fourth Proportional to 11,239.79, 16,859.99 and 2,919.62

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Solution

The fourth proportional to 11,239.79, 16,859.99 and 2,919.62 is: 4,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.79 : 16,859.99 = 2,919.62 : x
  2. Step 2: Convert to fraction form
    11,239.79/16,859.99 = 2,919.62/x
  3. Step 3: Cross multiply
    11,239.79x = 16,859.99 × 2,919.62
  4. Step 4: Simplify right side
    11,239.79x = 49,224,764.00
  5. Step 5: Solve for x
    x = 49,224,764.00/11,239.79
  6. Step 6: Final answer
    x = 4,379.51

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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.