Home / 3,770.40-5,202.72-2,278.56

Finding the Fourth Proportional to 3,770.40, 5,202.72 and 2,278.56

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Solution

The fourth proportional to 3,770.40, 5,202.72 and 2,278.56 is: 3,144.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,770.40 : 5,202.72 = 2,278.56 : x
  2. Step 2: Convert to fraction form
    3,770.40/5,202.72 = 2,278.56/x
  3. Step 3: Cross multiply
    3,770.40x = 5,202.72 × 2,278.56
  4. Step 4: Simplify right side
    3,770.40x = 11,854,709.68
  5. Step 5: Solve for x
    x = 11,854,709.68/3,770.40
  6. Step 6: Final answer
    x = 3,144.15

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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.