Home / 2,273.40-3,137.24-1,278.90

Finding the Fourth Proportional to 2,273.40, 3,137.24 and 1,278.90

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Solution

The fourth proportional to 2,273.40, 3,137.24 and 1,278.90 is: 1,764.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,273.40 : 3,137.24 = 1,278.90 : x
  2. Step 2: Convert to fraction form
    2,273.40/3,137.24 = 1,278.90/x
  3. Step 3: Cross multiply
    2,273.40x = 3,137.24 × 1,278.90
  4. Step 4: Simplify right side
    2,273.40x = 4,012,209.84
  5. Step 5: Solve for x
    x = 4,012,209.84/2,273.40
  6. Step 6: Final answer
    x = 1,764.85

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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.