Home / 2,375.22-3,278.09-1,380.47

Finding the Fourth Proportional to 2,375.22, 3,278.09 and 1,380.47

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Solution

The fourth proportional to 2,375.22, 3,278.09 and 1,380.47 is: 1,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,375.22 : 3,278.09 = 1,380.47 : x
  2. Step 2: Convert to fraction form
    2,375.22/3,278.09 = 1,380.47/x
  3. Step 3: Cross multiply
    2,375.22x = 3,278.09 × 1,380.47
  4. Step 4: Simplify right side
    2,375.22x = 4,525,304.90
  5. Step 5: Solve for x
    x = 4,525,304.90/2,375.22
  6. Step 6: Final answer
    x = 1,905.22

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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.