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Finding the Fourth Proportional to 7,486.62, 11,230.13 and 1,939.92

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Solution

The fourth proportional to 7,486.62, 11,230.13 and 1,939.92 is: 2,909.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.62 : 11,230.13 = 1,939.92 : x
  2. Step 2: Convert to fraction form
    7,486.62/11,230.13 = 1,939.92/x
  3. Step 3: Cross multiply
    7,486.62x = 11,230.13 × 1,939.92
  4. Step 4: Simplify right side
    7,486.62x = 21,785,544.09
  5. Step 5: Solve for x
    x = 21,785,544.09/7,486.62
  6. Step 6: Final answer
    x = 2,909.93

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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.