Home / 2,787.21-3,845.48-2,080.08

Finding the Fourth Proportional to 2,787.21, 3,845.48 and 2,080.08

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Solution

The fourth proportional to 2,787.21, 3,845.48 and 2,080.08 is: 2,869.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.21 : 3,845.48 = 2,080.08 : x
  2. Step 2: Convert to fraction form
    2,787.21/3,845.48 = 2,080.08/x
  3. Step 3: Cross multiply
    2,787.21x = 3,845.48 × 2,080.08
  4. Step 4: Simplify right side
    2,787.21x = 7,998,895.64
  5. Step 5: Solve for x
    x = 7,998,895.64/2,787.21
  6. Step 6: Final answer
    x = 2,869.86

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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.