Home / 2,375.55-3,278.19-1,380.77

Finding the Fourth Proportional to 2,375.55, 3,278.19 and 1,380.77

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Solution

The fourth proportional to 2,375.55, 3,278.19 and 1,380.77 is: 1,905.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,375.55 : 3,278.19 = 1,380.77 : x
  2. Step 2: Convert to fraction form
    2,375.55/3,278.19 = 1,380.77/x
  3. Step 3: Cross multiply
    2,375.55x = 3,278.19 × 1,380.77
  4. Step 4: Simplify right side
    2,375.55x = 4,526,426.41
  5. Step 5: Solve for x
    x = 4,526,426.41/2,375.55
  6. Step 6: Final answer
    x = 1,905.42

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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.