Home / 2,820.38-4,224.40-1,431.33

Finding the Fourth Proportional to 2,820.38, 4,224.40 and 1,431.33

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Solution

The fourth proportional to 2,820.38, 4,224.40 and 1,431.33 is: 2,143.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.38 : 4,224.40 = 1,431.33 : x
  2. Step 2: Convert to fraction form
    2,820.38/4,224.40 = 1,431.33/x
  3. Step 3: Cross multiply
    2,820.38x = 4,224.40 × 1,431.33
  4. Step 4: Simplify right side
    2,820.38x = 6,046,510.45
  5. Step 5: Solve for x
    x = 6,046,510.45/2,820.38
  6. Step 6: Final answer
    x = 2,143.86

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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.