Home / 3,923.16-5,411.64-2,679

Finding the Fourth Proportional to 3,923.16, 5,411.64 and 2,679

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Solution

The fourth proportional to 3,923.16, 5,411.64 and 2,679 is: 3,695.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.16 : 5,411.64 = 2,679 : x
  2. Step 2: Convert to fraction form
    3,923.16/5,411.64 = 2,679/x
  3. Step 3: Cross multiply
    3,923.16x = 5,411.64 × 2,679
  4. Step 4: Simplify right side
    3,923.16x = 14,497,783.56
  5. Step 5: Solve for x
    x = 14,497,783.56/3,923.16
  6. Step 6: Final answer
    x = 3,695.44

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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.