Home / 2,187.45-3,278.66-1,092.60

Finding the Fourth Proportional to 2,187.45, 3,278.66 and 1,092.60

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Solution

The fourth proportional to 2,187.45, 3,278.66 and 1,092.60 is: 1,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.45 : 3,278.66 = 1,092.60 : x
  2. Step 2: Convert to fraction form
    2,187.45/3,278.66 = 1,092.60/x
  3. Step 3: Cross multiply
    2,187.45x = 3,278.66 × 1,092.60
  4. Step 4: Simplify right side
    2,187.45x = 3,582,258.45
  5. Step 5: Solve for x
    x = 3,582,258.45/2,187.45
  6. Step 6: Final answer
    x = 1,637.64

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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.