Home / 3,820.70-5,731.43-1,356.21

Finding the Fourth Proportional to 3,820.70, 5,731.43 and 1,356.21

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Solution

The fourth proportional to 3,820.70, 5,731.43 and 1,356.21 is: 2,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.70 : 5,731.43 = 1,356.21 : x
  2. Step 2: Convert to fraction form
    3,820.70/5,731.43 = 1,356.21/x
  3. Step 3: Cross multiply
    3,820.70x = 5,731.43 × 1,356.21
  4. Step 4: Simplify right side
    3,820.70x = 7,773,015.90
  5. Step 5: Solve for x
    x = 7,773,015.90/3,820.70
  6. Step 6: Final answer
    x = 2,034.45

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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.