Home / 3,171.90-4,761.27-1,786.57

Finding the Fourth Proportional to 3,171.90, 4,761.27 and 1,786.57

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Solution

The fourth proportional to 3,171.90, 4,761.27 and 1,786.57 is: 2,681.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.90 : 4,761.27 = 1,786.57 : x
  2. Step 2: Convert to fraction form
    3,171.90/4,761.27 = 1,786.57/x
  3. Step 3: Cross multiply
    3,171.90x = 4,761.27 × 1,786.57
  4. Step 4: Simplify right side
    3,171.90x = 8,506,349.58
  5. Step 5: Solve for x
    x = 8,506,349.58/3,171.90
  6. Step 6: Final answer
    x = 2,681.78

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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.