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Finding the Fourth Proportional to 3,879.91, 5,344.87 and 2,883.46

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Solution

The fourth proportional to 3,879.91, 5,344.87 and 2,883.46 is: 3,972.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.91 : 5,344.87 = 2,883.46 : x
  2. Step 2: Convert to fraction form
    3,879.91/5,344.87 = 2,883.46/x
  3. Step 3: Cross multiply
    3,879.91x = 5,344.87 × 2,883.46
  4. Step 4: Simplify right side
    3,879.91x = 15,411,711.64
  5. Step 5: Solve for x
    x = 15,411,711.64/3,879.91
  6. Step 6: Final answer
    x = 3,972.18

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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.