Home / 2,919.75-4,033.64-1,913.85

Finding the Fourth Proportional to 2,919.75, 4,033.64 and 1,913.85

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Solution

The fourth proportional to 2,919.75, 4,033.64 and 1,913.85 is: 2,643.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.75 : 4,033.64 = 1,913.85 : x
  2. Step 2: Convert to fraction form
    2,919.75/4,033.64 = 1,913.85/x
  3. Step 3: Cross multiply
    2,919.75x = 4,033.64 × 1,913.85
  4. Step 4: Simplify right side
    2,919.75x = 7,719,781.91
  5. Step 5: Solve for x
    x = 7,719,781.91/2,919.75
  6. Step 6: Final answer
    x = 2,643.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.