Home / 3,787.40-5,679.10-1,190.28

Finding the Fourth Proportional to 3,787.40, 5,679.10 and 1,190.28

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Solution

The fourth proportional to 3,787.40, 5,679.10 and 1,190.28 is: 1,784.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.40 : 5,679.10 = 1,190.28 : x
  2. Step 2: Convert to fraction form
    3,787.40/5,679.10 = 1,190.28/x
  3. Step 3: Cross multiply
    3,787.40x = 5,679.10 × 1,190.28
  4. Step 4: Simplify right side
    3,787.40x = 6,759,719.15
  5. Step 5: Solve for x
    x = 6,759,719.15/3,787.40
  6. Step 6: Final answer
    x = 1,784.79

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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.