Home / 3,787.20-5,681.12-1,190.88

Finding the Fourth Proportional to 3,787.20, 5,681.12 and 1,190.88

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Solution

The fourth proportional to 3,787.20, 5,681.12 and 1,190.88 is: 1,786.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.20 : 5,681.12 = 1,190.88 : x
  2. Step 2: Convert to fraction form
    3,787.20/5,681.12 = 1,190.88/x
  3. Step 3: Cross multiply
    3,787.20x = 5,681.12 × 1,190.88
  4. Step 4: Simplify right side
    3,787.20x = 6,765,532.19
  5. Step 5: Solve for x
    x = 6,765,532.19/3,787.20
  6. Step 6: Final answer
    x = 1,786.42

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1.5x scale

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.