Home / 3,171.45-4,376.52-1,912.32

Finding the Fourth Proportional to 3,171.45, 4,376.52 and 1,912.32

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Solution

The fourth proportional to 3,171.45, 4,376.52 and 1,912.32 is: 2,638.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.45 : 4,376.52 = 1,912.32 : x
  2. Step 2: Convert to fraction form
    3,171.45/4,376.52 = 1,912.32/x
  3. Step 3: Cross multiply
    3,171.45x = 4,376.52 × 1,912.32
  4. Step 4: Simplify right side
    3,171.45x = 8,369,306.73
  5. Step 5: Solve for x
    x = 8,369,306.73/3,171.45
  6. Step 6: Final answer
    x = 2,638.95

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1.5x scale

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.