Home / 2,820.92-4,231.88-1,178.62

Finding the Fourth Proportional to 2,820.92, 4,231.88 and 1,178.62

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Solution

The fourth proportional to 2,820.92, 4,231.88 and 1,178.62 is: 1,768.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.92 : 4,231.88 = 1,178.62 : x
  2. Step 2: Convert to fraction form
    2,820.92/4,231.88 = 1,178.62/x
  3. Step 3: Cross multiply
    2,820.92x = 4,231.88 × 1,178.62
  4. Step 4: Simplify right side
    2,820.92x = 4,987,777.80
  5. Step 5: Solve for x
    x = 4,987,777.80/2,820.92
  6. Step 6: Final answer
    x = 1,768.14

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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.