Home / 3,821.80-5,731.35-1,356.70

Finding the Fourth Proportional to 3,821.80, 5,731.35 and 1,356.70

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Solution

The fourth proportional to 3,821.80, 5,731.35 and 1,356.70 is: 2,034.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.80 : 5,731.35 = 1,356.70 : x
  2. Step 2: Convert to fraction form
    3,821.80/5,731.35 = 1,356.70/x
  3. Step 3: Cross multiply
    3,821.80x = 5,731.35 × 1,356.70
  4. Step 4: Simplify right side
    3,821.80x = 7,775,722.55
  5. Step 5: Solve for x
    x = 7,775,722.55/3,821.80
  6. Step 6: Final answer
    x = 2,034.57

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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.