Home / 3,787.16-5,679.90-1,189.49

Finding the Fourth Proportional to 3,787.16, 5,679.90 and 1,189.49

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Solution

The fourth proportional to 3,787.16, 5,679.90 and 1,189.49 is: 1,783.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.16 : 5,679.90 = 1,189.49 : x
  2. Step 2: Convert to fraction form
    3,787.16/5,679.90 = 1,189.49/x
  3. Step 3: Cross multiply
    3,787.16x = 5,679.90 × 1,189.49
  4. Step 4: Simplify right side
    3,787.16x = 6,756,155.85
  5. Step 5: Solve for x
    x = 6,756,155.85/3,787.16
  6. Step 6: Final answer
    x = 1,783.97

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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.