Home / 3,820.56-5,730.12-1,355.28

Finding the Fourth Proportional to 3,820.56, 5,730.12 and 1,355.28

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Solution

The fourth proportional to 3,820.56, 5,730.12 and 1,355.28 is: 2,032.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.56 : 5,730.12 = 1,355.28 : x
  2. Step 2: Convert to fraction form
    3,820.56/5,730.12 = 1,355.28/x
  3. Step 3: Cross multiply
    3,820.56x = 5,730.12 × 1,355.28
  4. Step 4: Simplify right side
    3,820.56x = 7,765,917.03
  5. Step 5: Solve for x
    x = 7,765,917.03/3,820.56
  6. Step 6: Final answer
    x = 2,032.66

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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.