Home / 3,809.61-5,714.40-1,212.54

Finding the Fourth Proportional to 3,809.61, 5,714.40 and 1,212.54

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Solution

The fourth proportional to 3,809.61, 5,714.40 and 1,212.54 is: 1,818.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.61 : 5,714.40 = 1,212.54 : x
  2. Step 2: Convert to fraction form
    3,809.61/5,714.40 = 1,212.54/x
  3. Step 3: Cross multiply
    3,809.61x = 5,714.40 × 1,212.54
  4. Step 4: Simplify right side
    3,809.61x = 6,928,938.58
  5. Step 5: Solve for x
    x = 6,928,938.58/3,809.61
  6. Step 6: Final answer
    x = 1,818.81

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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.