Home / 3,118.78-4,679.33-1,270.42

Finding the Fourth Proportional to 3,118.78, 4,679.33 and 1,270.42

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Solution

The fourth proportional to 3,118.78, 4,679.33 and 1,270.42 is: 1,906.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.78 : 4,679.33 = 1,270.42 : x
  2. Step 2: Convert to fraction form
    3,118.78/4,679.33 = 1,270.42/x
  3. Step 3: Cross multiply
    3,118.78x = 4,679.33 × 1,270.42
  4. Step 4: Simplify right side
    3,118.78x = 5,944,731.81
  5. Step 5: Solve for x
    x = 5,944,731.81/3,118.78
  6. Step 6: Final answer
    x = 1,906.11

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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.