Home / 2,319.69-3,480.32-1,278.37

Finding the Fourth Proportional to 2,319.69, 3,480.32 and 1,278.37

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Solution

The fourth proportional to 2,319.69, 3,480.32 and 1,278.37 is: 1,917.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.69 : 3,480.32 = 1,278.37 : x
  2. Step 2: Convert to fraction form
    2,319.69/3,480.32 = 1,278.37/x
  3. Step 3: Cross multiply
    2,319.69x = 3,480.32 × 1,278.37
  4. Step 4: Simplify right side
    2,319.69x = 4,449,136.68
  5. Step 5: Solve for x
    x = 4,449,136.68/2,319.69
  6. Step 6: Final answer
    x = 1,917.99

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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.