Home / 2,919.45-4,379.94-1,276.32

Finding the Fourth Proportional to 2,919.45, 4,379.94 and 1,276.32

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Solution

The fourth proportional to 2,919.45, 4,379.94 and 1,276.32 is: 1,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.45 : 4,379.94 = 1,276.32 : x
  2. Step 2: Convert to fraction form
    2,919.45/4,379.94 = 1,276.32/x
  3. Step 3: Cross multiply
    2,919.45x = 4,379.94 × 1,276.32
  4. Step 4: Simplify right side
    2,919.45x = 5,590,205.02
  5. Step 5: Solve for x
    x = 5,590,205.02/2,919.45
  6. Step 6: Final answer
    x = 1,914.81

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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.