Home / 3,412.58-5,118.66-2,007.78

Finding the Fourth Proportional to 3,412.58, 5,118.66 and 2,007.78

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Solution

The fourth proportional to 3,412.58, 5,118.66 and 2,007.78 is: 3,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.58 : 5,118.66 = 2,007.78 : x
  2. Step 2: Convert to fraction form
    3,412.58/5,118.66 = 2,007.78/x
  3. Step 3: Cross multiply
    3,412.58x = 5,118.66 × 2,007.78
  4. Step 4: Simplify right side
    3,412.58x = 10,277,123.98
  5. Step 5: Solve for x
    x = 10,277,123.98/3,412.58
  6. Step 6: Final answer
    x = 3,011.55

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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.