Home / 2,230.56-3,077.92-1,286.35

Finding the Fourth Proportional to 2,230.56, 3,077.92 and 1,286.35

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Solution

The fourth proportional to 2,230.56, 3,077.92 and 1,286.35 is: 1,775.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.56 : 3,077.92 = 1,286.35 : x
  2. Step 2: Convert to fraction form
    2,230.56/3,077.92 = 1,286.35/x
  3. Step 3: Cross multiply
    2,230.56x = 3,077.92 × 1,286.35
  4. Step 4: Simplify right side
    2,230.56x = 3,959,282.39
  5. Step 5: Solve for x
    x = 3,959,282.39/2,230.56
  6. Step 6: Final answer
    x = 1,775.02

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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.