Home / 2,168.70-2,992.62-1,272.35

Finding the Fourth Proportional to 2,168.70, 2,992.62 and 1,272.35

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Solution

The fourth proportional to 2,168.70, 2,992.62 and 1,272.35 is: 1,755.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.70 : 2,992.62 = 1,272.35 : x
  2. Step 2: Convert to fraction form
    2,168.70/2,992.62 = 1,272.35/x
  3. Step 3: Cross multiply
    2,168.70x = 2,992.62 × 1,272.35
  4. Step 4: Simplify right side
    2,168.70x = 3,807,655.48
  5. Step 5: Solve for x
    x = 3,807,655.48/2,168.70
  6. Step 6: Final answer
    x = 1,755.73

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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.