Home / 2,787.14-4,181.26-1,143.66

Finding the Fourth Proportional to 2,787.14, 4,181.26 and 1,143.66

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Solution

The fourth proportional to 2,787.14, 4,181.26 and 1,143.66 is: 1,715.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.14 : 4,181.26 = 1,143.66 : x
  2. Step 2: Convert to fraction form
    2,787.14/4,181.26 = 1,143.66/x
  3. Step 3: Cross multiply
    2,787.14x = 4,181.26 × 1,143.66
  4. Step 4: Simplify right side
    2,787.14x = 4,781,939.81
  5. Step 5: Solve for x
    x = 4,781,939.81/2,787.14
  6. Step 6: Final answer
    x = 1,715.72

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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.