Home / 4,278.75-6,419.21-1,200.75

Finding the Fourth Proportional to 4,278.75, 6,419.21 and 1,200.75

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Solution

The fourth proportional to 4,278.75, 6,419.21 and 1,200.75 is: 1,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.75 : 6,419.21 = 1,200.75 : x
  2. Step 2: Convert to fraction form
    4,278.75/6,419.21 = 1,200.75/x
  3. Step 3: Cross multiply
    4,278.75x = 6,419.21 × 1,200.75
  4. Step 4: Simplify right side
    4,278.75x = 7,707,860.40
  5. Step 5: Solve for x
    x = 7,707,860.40/4,278.75
  6. Step 6: Final answer
    x = 1,801.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.