Home / 2,838.89-3,917.34-1,643.90

Finding the Fourth Proportional to 2,838.89, 3,917.34 and 1,643.90

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Solution

The fourth proportional to 2,838.89, 3,917.34 and 1,643.90 is: 2,268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.89 : 3,917.34 = 1,643.90 : x
  2. Step 2: Convert to fraction form
    2,838.89/3,917.34 = 1,643.90/x
  3. Step 3: Cross multiply
    2,838.89x = 3,917.34 × 1,643.90
  4. Step 4: Simplify right side
    2,838.89x = 6,439,706.85
  5. Step 5: Solve for x
    x = 6,439,706.85/2,838.89
  6. Step 6: Final answer
    x = 2,268.39

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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.