Home / 3,171.61-4,753.99-1,321.31

Finding the Fourth Proportional to 3,171.61, 4,753.99 and 1,321.31

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Solution

The fourth proportional to 3,171.61, 4,753.99 and 1,321.31 is: 1,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.61 : 4,753.99 = 1,321.31 : x
  2. Step 2: Convert to fraction form
    3,171.61/4,753.99 = 1,321.31/x
  3. Step 3: Cross multiply
    3,171.61x = 4,753.99 × 1,321.31
  4. Step 4: Simplify right side
    3,171.61x = 6,281,508.06
  5. Step 5: Solve for x
    x = 6,281,508.06/3,171.61
  6. Step 6: Final answer
    x = 1,980.55

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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.