Home / 3,810.75-5,716.25-1,213.70

Finding the Fourth Proportional to 3,810.75, 5,716.25 and 1,213.70

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Solution

The fourth proportional to 3,810.75, 5,716.25 and 1,213.70 is: 1,820.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.75 : 5,716.25 = 1,213.70 : x
  2. Step 2: Convert to fraction form
    3,810.75/5,716.25 = 1,213.70/x
  3. Step 3: Cross multiply
    3,810.75x = 5,716.25 × 1,213.70
  4. Step 4: Simplify right side
    3,810.75x = 6,937,777.98
  5. Step 5: Solve for x
    x = 6,937,777.98/3,810.75
  6. Step 6: Final answer
    x = 1,820.58

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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.