Home / 3,386.56-5,078.50-1,305.42

Finding the Fourth Proportional to 3,386.56, 5,078.50 and 1,305.42

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Solution

The fourth proportional to 3,386.56, 5,078.50 and 1,305.42 is: 1,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.56 : 5,078.50 = 1,305.42 : x
  2. Step 2: Convert to fraction form
    3,386.56/5,078.50 = 1,305.42/x
  3. Step 3: Cross multiply
    3,386.56x = 5,078.50 × 1,305.42
  4. Step 4: Simplify right side
    3,386.56x = 6,629,575.47
  5. Step 5: Solve for x
    x = 6,629,575.47/3,386.56
  6. Step 6: Final answer
    x = 1,957.61

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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.