Home / 2,678.76-4,018.14-1,378.44

Finding the Fourth Proportional to 2,678.76, 4,018.14 and 1,378.44

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Solution

The fourth proportional to 2,678.76, 4,018.14 and 1,378.44 is: 2,067.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.76 : 4,018.14 = 1,378.44 : x
  2. Step 2: Convert to fraction form
    2,678.76/4,018.14 = 1,378.44/x
  3. Step 3: Cross multiply
    2,678.76x = 4,018.14 × 1,378.44
  4. Step 4: Simplify right side
    2,678.76x = 5,538,764.90
  5. Step 5: Solve for x
    x = 5,538,764.90/2,678.76
  6. Step 6: Final answer
    x = 2,067.66

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1.5x scale

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.