Home / 2,820.48-4,231.38-872.58

Finding the Fourth Proportional to 2,820.48, 4,231.38 and 872.58

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Solution

The fourth proportional to 2,820.48, 4,231.38 and 872.58 is: 1,309.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.48 : 4,231.38 = 872.58 : x
  2. Step 2: Convert to fraction form
    2,820.48/4,231.38 = 872.58/x
  3. Step 3: Cross multiply
    2,820.48x = 4,231.38 × 872.58
  4. Step 4: Simplify right side
    2,820.48x = 3,692,217.56
  5. Step 5: Solve for x
    x = 3,692,217.56/2,820.48
  6. Step 6: Final answer
    x = 1,309.07

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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.