Home / 3,819.47-5,270.61-2,140.86

Finding the Fourth Proportional to 3,819.47, 5,270.61 and 2,140.86

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Solution

The fourth proportional to 3,819.47, 5,270.61 and 2,140.86 is: 2,954.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.47 : 5,270.61 = 2,140.86 : x
  2. Step 2: Convert to fraction form
    3,819.47/5,270.61 = 2,140.86/x
  3. Step 3: Cross multiply
    3,819.47x = 5,270.61 × 2,140.86
  4. Step 4: Simplify right side
    3,819.47x = 11,283,638.12
  5. Step 5: Solve for x
    x = 11,283,638.12/3,819.47
  6. Step 6: Final answer
    x = 2,954.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.