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Finding the Fourth Proportional to 2,624.15, 3,936.23 and 892.79

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Solution

The fourth proportional to 2,624.15, 3,936.23 and 892.79 is: 1,339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,624.15 : 3,936.23 = 892.79 : x
  2. Step 2: Convert to fraction form
    2,624.15/3,936.23 = 892.79/x
  3. Step 3: Cross multiply
    2,624.15x = 3,936.23 × 892.79
  4. Step 4: Simplify right side
    2,624.15x = 3,514,226.78
  5. Step 5: Solve for x
    x = 3,514,226.78/2,624.15
  6. Step 6: Final answer
    x = 1,339.19

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Similar ratio
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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.