Home / 3,787.37-5,681.78-1,191.05

Finding the Fourth Proportional to 3,787.37, 5,681.78 and 1,191.05

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Solution

The fourth proportional to 3,787.37, 5,681.78 and 1,191.05 is: 1,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.37 : 5,681.78 = 1,191.05 : x
  2. Step 2: Convert to fraction form
    3,787.37/5,681.78 = 1,191.05/x
  3. Step 3: Cross multiply
    3,787.37x = 5,681.78 × 1,191.05
  4. Step 4: Simplify right side
    3,787.37x = 6,767,284.07
  5. Step 5: Solve for x
    x = 6,767,284.07/3,787.37
  6. Step 6: Final answer
    x = 1,786.80

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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.