Home / 2,278.22-3,415.20-1,236.70

Finding the Fourth Proportional to 2,278.22, 3,415.20 and 1,236.70

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Solution

The fourth proportional to 2,278.22, 3,415.20 and 1,236.70 is: 1,853.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.22 : 3,415.20 = 1,236.70 : x
  2. Step 2: Convert to fraction form
    2,278.22/3,415.20 = 1,236.70/x
  3. Step 3: Cross multiply
    2,278.22x = 3,415.20 × 1,236.70
  4. Step 4: Simplify right side
    2,278.22x = 4,223,577.84
  5. Step 5: Solve for x
    x = 4,223,577.84/2,278.22
  6. Step 6: Final answer
    x = 1,853.89

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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.