Home / 3,118.76-4,678.14-1,270.88

Finding the Fourth Proportional to 3,118.76, 4,678.14 and 1,270.88

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Solution

The fourth proportional to 3,118.76, 4,678.14 and 1,270.88 is: 1,906.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.76 : 4,678.14 = 1,270.88 : x
  2. Step 2: Convert to fraction form
    3,118.76/4,678.14 = 1,270.88/x
  3. Step 3: Cross multiply
    3,118.76x = 4,678.14 × 1,270.88
  4. Step 4: Simplify right side
    3,118.76x = 5,945,354.56
  5. Step 5: Solve for x
    x = 5,945,354.56/3,118.76
  6. Step 6: Final answer
    x = 1,906.32

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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.