Home / 3,977.18-5,485.74-3,231.14

Finding the Fourth Proportional to 3,977.18, 5,485.74 and 3,231.14

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Solution

The fourth proportional to 3,977.18, 5,485.74 and 3,231.14 is: 4,456.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.18 : 5,485.74 = 3,231.14 : x
  2. Step 2: Convert to fraction form
    3,977.18/5,485.74 = 3,231.14/x
  3. Step 3: Cross multiply
    3,977.18x = 5,485.74 × 3,231.14
  4. Step 4: Simplify right side
    3,977.18x = 17,725,193.94
  5. Step 5: Solve for x
    x = 17,725,193.94/3,977.18
  6. Step 6: Final answer
    x = 4,456.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.