Home / 2,786.70-4,180.98-1,487.28

Finding the Fourth Proportional to 2,786.70, 4,180.98 and 1,487.28

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Solution

The fourth proportional to 2,786.70, 4,180.98 and 1,487.28 is: 2,231.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.70 : 4,180.98 = 1,487.28 : x
  2. Step 2: Convert to fraction form
    2,786.70/4,180.98 = 1,487.28/x
  3. Step 3: Cross multiply
    2,786.70x = 4,180.98 × 1,487.28
  4. Step 4: Simplify right side
    2,786.70x = 6,218,287.93
  5. Step 5: Solve for x
    x = 6,218,287.93/2,786.70
  6. Step 6: Final answer
    x = 2,231.42

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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.