Home / 2,787.40-4,177.92-1,324.48

Finding the Fourth Proportional to 2,787.40, 4,177.92 and 1,324.48

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Solution

The fourth proportional to 2,787.40, 4,177.92 and 1,324.48 is: 1,985.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.40 : 4,177.92 = 1,324.48 : x
  2. Step 2: Convert to fraction form
    2,787.40/4,177.92 = 1,324.48/x
  3. Step 3: Cross multiply
    2,787.40x = 4,177.92 × 1,324.48
  4. Step 4: Simplify right side
    2,787.40x = 5,533,571.48
  5. Step 5: Solve for x
    x = 5,533,571.48/2,787.40
  6. Step 6: Final answer
    x = 1,985.21

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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.