Home / 2,820.55-4,227.29-1,338.55

Finding the Fourth Proportional to 2,820.55, 4,227.29 and 1,338.55

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Solution

The fourth proportional to 2,820.55, 4,227.29 and 1,338.55 is: 2,006.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.55 : 4,227.29 = 1,338.55 : x
  2. Step 2: Convert to fraction form
    2,820.55/4,227.29 = 1,338.55/x
  3. Step 3: Cross multiply
    2,820.55x = 4,227.29 × 1,338.55
  4. Step 4: Simplify right side
    2,820.55x = 5,658,438.68
  5. Step 5: Solve for x
    x = 5,658,438.68/2,820.55
  6. Step 6: Final answer
    x = 2,006.15

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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.