Home / 2,821.87-4,231.36-1,177.98

Finding the Fourth Proportional to 2,821.87, 4,231.36 and 1,177.98

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Solution

The fourth proportional to 2,821.87, 4,231.36 and 1,177.98 is: 1,766.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.87 : 4,231.36 = 1,177.98 : x
  2. Step 2: Convert to fraction form
    2,821.87/4,231.36 = 1,177.98/x
  3. Step 3: Cross multiply
    2,821.87x = 4,231.36 × 1,177.98
  4. Step 4: Simplify right side
    2,821.87x = 4,984,457.45
  5. Step 5: Solve for x
    x = 4,984,457.45/2,821.87
  6. Step 6: Final answer
    x = 1,766.37

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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.