Home / 1,997.24-2,755.52-1,209.92

Finding the Fourth Proportional to 1,997.24, 2,755.52 and 1,209.92

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Solution

The fourth proportional to 1,997.24, 2,755.52 and 1,209.92 is: 1,669.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.24 : 2,755.52 = 1,209.92 : x
  2. Step 2: Convert to fraction form
    1,997.24/2,755.52 = 1,209.92/x
  3. Step 3: Cross multiply
    1,997.24x = 2,755.52 × 1,209.92
  4. Step 4: Simplify right side
    1,997.24x = 3,333,958.76
  5. Step 5: Solve for x
    x = 3,333,958.76/1,997.24
  6. Step 6: Final answer
    x = 1,669.28

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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.