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Finding the Fourth Proportional to 2,086.57, 2,879.80 and 1,202.22

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Solution

The fourth proportional to 2,086.57, 2,879.80 and 1,202.22 is: 1,659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.57 : 2,879.80 = 1,202.22 : x
  2. Step 2: Convert to fraction form
    2,086.57/2,879.80 = 1,202.22/x
  3. Step 3: Cross multiply
    2,086.57x = 2,879.80 × 1,202.22
  4. Step 4: Simplify right side
    2,086.57x = 3,462,138.76
  5. Step 5: Solve for x
    x = 3,462,138.76/2,086.57
  6. Step 6: Final answer
    x = 1,659.25

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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.