Home / 3,171.38-4,376.50-1,912.46

Finding the Fourth Proportional to 3,171.38, 4,376.50 and 1,912.46

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Solution

The fourth proportional to 3,171.38, 4,376.50 and 1,912.46 is: 2,639.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.38 : 4,376.50 = 1,912.46 : x
  2. Step 2: Convert to fraction form
    3,171.38/4,376.50 = 1,912.46/x
  3. Step 3: Cross multiply
    3,171.38x = 4,376.50 × 1,912.46
  4. Step 4: Simplify right side
    3,171.38x = 8,369,854.53
  5. Step 5: Solve for x
    x = 8,369,854.53/3,171.38
  6. Step 6: Final answer
    x = 2,639.19

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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.