Home / 2,375.96-3,278.87-1,381.32

Finding the Fourth Proportional to 2,375.96, 3,278.87 and 1,381.32

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Solution

The fourth proportional to 2,375.96, 3,278.87 and 1,381.32 is: 1,906.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,375.96 : 3,278.87 = 1,381.32 : x
  2. Step 2: Convert to fraction form
    2,375.96/3,278.87 = 1,381.32/x
  3. Step 3: Cross multiply
    2,375.96x = 3,278.87 × 1,381.32
  4. Step 4: Simplify right side
    2,375.96x = 4,529,161.80
  5. Step 5: Solve for x
    x = 4,529,161.80/2,375.96
  6. Step 6: Final answer
    x = 1,906.25

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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.