Home / 3,810.20-5,715.72-1,212.54

Finding the Fourth Proportional to 3,810.20, 5,715.72 and 1,212.54

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Solution

The fourth proportional to 3,810.20, 5,715.72 and 1,212.54 is: 1,818.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.20 : 5,715.72 = 1,212.54 : x
  2. Step 2: Convert to fraction form
    3,810.20/5,715.72 = 1,212.54/x
  3. Step 3: Cross multiply
    3,810.20x = 5,715.72 × 1,212.54
  4. Step 4: Simplify right side
    3,810.20x = 6,930,539.13
  5. Step 5: Solve for x
    x = 6,930,539.13/3,810.20
  6. Step 6: Final answer
    x = 1,818.94

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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.