Home / 3,820.91-5,265.71-2,980.28

Finding the Fourth Proportional to 3,820.91, 5,265.71 and 2,980.28

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Solution

The fourth proportional to 3,820.91, 5,265.71 and 2,980.28 is: 4,107.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.91 : 5,265.71 = 2,980.28 : x
  2. Step 2: Convert to fraction form
    3,820.91/5,265.71 = 2,980.28/x
  3. Step 3: Cross multiply
    3,820.91x = 5,265.71 × 2,980.28
  4. Step 4: Simplify right side
    3,820.91x = 15,693,248.97
  5. Step 5: Solve for x
    x = 15,693,248.97/3,820.91
  6. Step 6: Final answer
    x = 4,107.21

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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.