Home / 2,787.06-4,181.96-1,121.12

Finding the Fourth Proportional to 2,787.06, 4,181.96 and 1,121.12

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Solution

The fourth proportional to 2,787.06, 4,181.96 and 1,121.12 is: 1,682.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.06 : 4,181.96 = 1,121.12 : x
  2. Step 2: Convert to fraction form
    2,787.06/4,181.96 = 1,121.12/x
  3. Step 3: Cross multiply
    2,787.06x = 4,181.96 × 1,121.12
  4. Step 4: Simplify right side
    2,787.06x = 4,688,476.57
  5. Step 5: Solve for x
    x = 4,688,476.57/2,787.06
  6. Step 6: Final answer
    x = 1,682.23

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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.