Home / 2,175.43-3,247.40-1,912.70

Finding the Fourth Proportional to 2,175.43, 3,247.40 and 1,912.70

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Solution

The fourth proportional to 2,175.43, 3,247.40 and 1,912.70 is: 2,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.43 : 3,247.40 = 1,912.70 : x
  2. Step 2: Convert to fraction form
    2,175.43/3,247.40 = 1,912.70/x
  3. Step 3: Cross multiply
    2,175.43x = 3,247.40 × 1,912.70
  4. Step 4: Simplify right side
    2,175.43x = 6,211,301.98
  5. Step 5: Solve for x
    x = 6,211,301.98/2,175.43
  6. Step 6: Final answer
    x = 2,855.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.