Home / 2,168.24-2,992.07-1,211.11

Finding the Fourth Proportional to 2,168.24, 2,992.07 and 1,211.11

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Solution

The fourth proportional to 2,168.24, 2,992.07 and 1,211.11 is: 1,671.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.24 : 2,992.07 = 1,211.11 : x
  2. Step 2: Convert to fraction form
    2,168.24/2,992.07 = 1,211.11/x
  3. Step 3: Cross multiply
    2,168.24x = 2,992.07 × 1,211.11
  4. Step 4: Simplify right side
    2,168.24x = 3,623,721.45
  5. Step 5: Solve for x
    x = 3,623,721.45/2,168.24
  6. Step 6: Final answer
    x = 1,671.28

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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.