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Finding the Fourth Proportional to 3,234.79, 4,453.78 and 2,939.18

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Solution

The fourth proportional to 3,234.79, 4,453.78 and 2,939.18 is: 4,046.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,234.79 : 4,453.78 = 2,939.18 : x
  2. Step 2: Convert to fraction form
    3,234.79/4,453.78 = 2,939.18/x
  3. Step 3: Cross multiply
    3,234.79x = 4,453.78 × 2,939.18
  4. Step 4: Simplify right side
    3,234.79x = 13,090,424.14
  5. Step 5: Solve for x
    x = 13,090,424.14/3,234.79
  6. Step 6: Final answer
    x = 4,046.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.