Home / 2,278.76-3,145.30-1,334.70

Finding the Fourth Proportional to 2,278.76, 3,145.30 and 1,334.70

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Solution

The fourth proportional to 2,278.76, 3,145.30 and 1,334.70 is: 1,842.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.76 : 3,145.30 = 1,334.70 : x
  2. Step 2: Convert to fraction form
    2,278.76/3,145.30 = 1,334.70/x
  3. Step 3: Cross multiply
    2,278.76x = 3,145.30 × 1,334.70
  4. Step 4: Simplify right side
    2,278.76x = 4,198,028.57
  5. Step 5: Solve for x
    x = 4,198,028.57/2,278.76
  6. Step 6: Final answer
    x = 1,842.25

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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.