Home / 4,917.72-6,787.92-2,928.88

Finding the Fourth Proportional to 4,917.72, 6,787.92 and 2,928.88

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Solution

The fourth proportional to 4,917.72, 6,787.92 and 2,928.88 is: 4,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.72 : 6,787.92 = 2,928.88 : x
  2. Step 2: Convert to fraction form
    4,917.72/6,787.92 = 2,928.88/x
  3. Step 3: Cross multiply
    4,917.72x = 6,787.92 × 2,928.88
  4. Step 4: Simplify right side
    4,917.72x = 19,881,003.13
  5. Step 5: Solve for x
    x = 19,881,003.13/4,917.72
  6. Step 6: Final answer
    x = 4,042.73

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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.