Home / 3,439.76-5,159.64-2,123.92

Finding the Fourth Proportional to 3,439.76, 5,159.64 and 2,123.92

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Solution

The fourth proportional to 3,439.76, 5,159.64 and 2,123.92 is: 3,185.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.76 : 5,159.64 = 2,123.92 : x
  2. Step 2: Convert to fraction form
    3,439.76/5,159.64 = 2,123.92/x
  3. Step 3: Cross multiply
    3,439.76x = 5,159.64 × 2,123.92
  4. Step 4: Simplify right side
    3,439.76x = 10,958,636.79
  5. Step 5: Solve for x
    x = 10,958,636.79/3,439.76
  6. Step 6: Final answer
    x = 3,185.87

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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.