Home / 3,131.92-4,699.19-1,376.02

Finding the Fourth Proportional to 3,131.92, 4,699.19 and 1,376.02

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Solution

The fourth proportional to 3,131.92, 4,699.19 and 1,376.02 is: 2,064.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.92 : 4,699.19 = 1,376.02 : x
  2. Step 2: Convert to fraction form
    3,131.92/4,699.19 = 1,376.02/x
  3. Step 3: Cross multiply
    3,131.92x = 4,699.19 × 1,376.02
  4. Step 4: Simplify right side
    3,131.92x = 6,466,179.42
  5. Step 5: Solve for x
    x = 6,466,179.42/3,131.92
  6. Step 6: Final answer
    x = 2,064.61

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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.