Home / 2,787.21-4,182.18-1,227.02

Finding the Fourth Proportional to 2,787.21, 4,182.18 and 1,227.02

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Solution

The fourth proportional to 2,787.21, 4,182.18 and 1,227.02 is: 1,841.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.21 : 4,182.18 = 1,227.02 : x
  2. Step 2: Convert to fraction form
    2,787.21/4,182.18 = 1,227.02/x
  3. Step 3: Cross multiply
    2,787.21x = 4,182.18 × 1,227.02
  4. Step 4: Simplify right side
    2,787.21x = 5,131,592.99
  5. Step 5: Solve for x
    x = 5,131,592.99/2,787.21
  6. Step 6: Final answer
    x = 1,841.12

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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.