Home / 3,171.64-4,376.10-1,912.24

Finding the Fourth Proportional to 3,171.64, 4,376.10 and 1,912.24

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Solution

The fourth proportional to 3,171.64, 4,376.10 and 1,912.24 is: 2,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.64 : 4,376.10 = 1,912.24 : x
  2. Step 2: Convert to fraction form
    3,171.64/4,376.10 = 1,912.24/x
  3. Step 3: Cross multiply
    3,171.64x = 4,376.10 × 1,912.24
  4. Step 4: Simplify right side
    3,171.64x = 8,368,153.46
  5. Step 5: Solve for x
    x = 8,368,153.46/3,171.64
  6. Step 6: Final answer
    x = 2,638.43

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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.