Home / 2,113.87-3,171.09-1,997.28

Finding the Fourth Proportional to 2,113.87, 3,171.09 and 1,997.28

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Solution

The fourth proportional to 2,113.87, 3,171.09 and 1,997.28 is: 2,996.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.87 : 3,171.09 = 1,997.28 : x
  2. Step 2: Convert to fraction form
    2,113.87/3,171.09 = 1,997.28/x
  3. Step 3: Cross multiply
    2,113.87x = 3,171.09 × 1,997.28
  4. Step 4: Simplify right side
    2,113.87x = 6,333,557.57
  5. Step 5: Solve for x
    x = 6,333,557.57/2,113.87
  6. Step 6: Final answer
    x = 2,996.19

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1.5x scale

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.